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Bugfix: InstanciaDeEntrega.observaciones no puede ser None.
[software/sercom.git] / doc / schema / curso.dia
diff --git a/doc/schema/curso.dia b/doc/schema/curso.dia
index 1dfcf1c57dcbe8577225ffd757a6687e7c8c3606..eafceed70fe3afff8383f46a1da1581af2efff21 100644 (file)
--- a/doc/schema/curso.dia
+++ b/doc/schema/curso.dia
@@ -28,7 +28,7 @@
           <dia:boolean val="true"/>
         </dia:attribute>
         <dia:attribute name="scaling">
           <dia:boolean val="true"/>
         </dia:attribute>
         <dia:attribute name="scaling">
-          <dia:real val="0.66474455595016479"/>
+          <dia:real val="0.34429597854614258"/>
         </dia:attribute>
         <dia:attribute name="fitto">
           <dia:boolean val="true"/>
         </dia:attribute>
         <dia:attribute name="fitto">
           <dia:boolean val="true"/>
@@ -71,16 +71,16 @@
   <dia:layer name="Fondo" visible="true">
     <dia:object type="UML - LargePackage" version="0" id="O0">
       <dia:attribute name="obj_pos">
   <dia:layer name="Fondo" visible="true">
     <dia:object type="UML - LargePackage" version="0" id="O0">
       <dia:attribute name="obj_pos">
-        <dia:point val="-18,-4"/>
+        <dia:point val="-29.55,-3.75"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-18.05,-5.05;5.05,31.05"/>
+        <dia:rectangle val="-29.6,-4.8;15,31.3"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-18,-4"/>
+        <dia:point val="-29.55,-3.75"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
       </dia:attribute>
       <dia:attribute name="elem_width">
-        <dia:real val="23"/>
+        <dia:real val="44.499999999999993"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
         <dia:real val="35"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
         <dia:real val="35"/>
@@ -101,24 +101,228 @@
         <dia:string>#Curso#</dia:string>
       </dia:attribute>
     </dia:object>
         <dia:string>#Curso#</dia:string>
       </dia:attribute>
     </dia:object>
-    <dia:object type="UML - Class" version="0" id="O1">
+    <dia:object type="UML - Association" version="1" id="O1">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-14,24"/>
+        <dia:point val="-19.68,1.295"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-14.05,23.95;-6.1,29.65"/>
+        <dia:rectangle val="-19.73,0.57;4.72,2.195"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-19.68,1.295"/>
+        <dia:point val="-7.505,1.295"/>
+        <dia:point val="-7.505,1.27"/>
+        <dia:point val="4.67,1.27"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="15"/>
+        <dia:connection handle="1" to="O18" connection="14"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O2">
+      <dia:attribute name="obj_pos">
+        <dia:point val="12.87,3.67"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="6.75,2.97;13.97,16.85"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="12.87,3.67"/>
+        <dia:point val="13.87,3.67"/>
+        <dia:point val="13.87,15.95"/>
+        <dia:point val="6.8,15.95"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O18" connection="21"/>
+        <dia:connection handle="1" to="O6" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O3">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-27.13,0.495"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-28.18,-0.205;-27.08,23.52"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-27.13,0.495"/>
+        <dia:point val="-28.13,0.495"/>
+        <dia:point val="-28.13,22.62"/>
+        <dia:point val="-27.13,22.62"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O23" connection="12"/>
+        <dia:connection handle="1" to="O20" connection="10"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O4">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-4.15,2.45"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-4.2,2.4;3.75,12.1"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-14,24"/>
+        <dia:point val="-4.15,2.45"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
         <dia:real val="7.8499999999999996"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
       </dia:attribute>
       <dia:attribute name="elem_width">
         <dia:real val="7.8499999999999996"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
-        <dia:real val="5.5999999999999996"/>
+        <dia:real val="9.5999999999999996"/>
       </dia:attribute>
       <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="name">
-        <dia:string>#curso#</dia:string>
+        <dia:string>#usuario#</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
@@ -127,7 +331,7 @@
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="abstract">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="abstract">
-        <dia:boolean val="false"/>
+        <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="suppress_attributes">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="suppress_attributes">
         <dia:boolean val="false"/>
@@ -227,17 +431,40 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#anio#</dia:string>
+            <dia:string>#tipo#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
+            <dia:string>#CHAR(1)#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
+            <dia:string>#Tipo de usuario para polimorfismo: 'd' (docente), 'a' (alumno) o 'u' (usuario, en realidad no debería estar nunca).#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="1"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#usuario#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
             <dia:string>##</dia:string>
           </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>#Para alumnos es el padrón, para docentes el usuario que les plazca (que no pueda ser un padrón válido).#</dia:string>
+          </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="2"/>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="2"/>
           </dia:attribute>
@@ -250,10 +477,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#cuatrimestre#</dia:string>
+            <dia:string>#email#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
+            <dia:string>#VARCHAR#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -262,7 +489,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="2"/>
+            <dia:enum val="0"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -273,10 +500,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#numero#</dia:string>
+            <dia:string>#contrasenia#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
+            <dia:string>#VARCHAR#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -285,7 +512,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="2"/>
+            <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -296,7 +523,7 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#descripcion#</dia:string>
+            <dia:string>#nombre#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#VARCHAR#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#VARCHAR#</dia:string>
@@ -317,118 +544,9 @@
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
-      </dia:attribute>
-      <dia:attribute name="operations"/>
-      <dia:attribute name="template">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="templates"/>
-      <dia:childnode parent="O0"/>
-    </dia:object>
-    <dia:object type="UML - Class" version="0" id="O2">
-      <dia:attribute name="obj_pos">
-        <dia:point val="-5,-3"/>
-      </dia:attribute>
-      <dia:attribute name="obj_bb">
-        <dia:rectangle val="-5.05,-3.05;2.9,2.65"/>
-      </dia:attribute>
-      <dia:attribute name="elem_corner">
-        <dia:point val="-5,-3"/>
-      </dia:attribute>
-      <dia:attribute name="elem_width">
-        <dia:real val="7.8499999999999996"/>
-      </dia:attribute>
-      <dia:attribute name="elem_height">
-        <dia:real val="5.5999999999999996"/>
-      </dia:attribute>
-      <dia:attribute name="name">
-        <dia:string>#enunciado#</dia:string>
-      </dia:attribute>
-      <dia:attribute name="stereotype">
-        <dia:string>##</dia:string>
-      </dia:attribute>
-      <dia:attribute name="comment">
-        <dia:string>##</dia:string>
-      </dia:attribute>
-      <dia:attribute name="abstract">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="suppress_attributes">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="suppress_operations">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="visible_attributes">
-        <dia:boolean val="true"/>
-      </dia:attribute>
-      <dia:attribute name="visible_operations">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="visible_comments">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="wrap_operations">
-        <dia:boolean val="true"/>
-      </dia:attribute>
-      <dia:attribute name="wrap_after_char">
-        <dia:int val="40"/>
-      </dia:attribute>
-      <dia:attribute name="comment_line_length">
-        <dia:int val="40"/>
-      </dia:attribute>
-      <dia:attribute name="comment_tagging">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="line_color">
-        <dia:color val="#000000"/>
-      </dia:attribute>
-      <dia:attribute name="fill_color">
-        <dia:color val="#ffffff"/>
-      </dia:attribute>
-      <dia:attribute name="text_color">
-        <dia:color val="#000000"/>
-      </dia:attribute>
-      <dia:attribute name="normal_font">
-        <dia:font family="monospace" style="0" name="Courier"/>
-      </dia:attribute>
-      <dia:attribute name="abstract_font">
-        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
-      </dia:attribute>
-      <dia:attribute name="polymorphic_font">
-        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
-      </dia:attribute>
-      <dia:attribute name="classname_font">
-        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
-      </dia:attribute>
-      <dia:attribute name="abstract_classname_font">
-        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
-      </dia:attribute>
-      <dia:attribute name="comment_font">
-        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
-      </dia:attribute>
-      <dia:attribute name="normal_font_height">
-        <dia:real val="0.80000000000000004"/>
-      </dia:attribute>
-      <dia:attribute name="polymorphic_font_height">
-        <dia:real val="0.80000000000000004"/>
-      </dia:attribute>
-      <dia:attribute name="abstract_font_height">
-        <dia:real val="0.80000000000000004"/>
-      </dia:attribute>
-      <dia:attribute name="classname_font_height">
-        <dia:real val="1"/>
-      </dia:attribute>
-      <dia:attribute name="abstract_classname_font_height">
-        <dia:real val="1"/>
-      </dia:attribute>
-      <dia:attribute name="comment_font_height">
-        <dia:real val="1"/>
-      </dia:attribute>
-      <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#id#</dia:string>
+            <dia:string>#telefono#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -445,45 +563,22 @@
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
-          <dia:attribute name="class_scope">
-            <dia:boolean val="true"/>
-          </dia:attribute>
-        </dia:composite>
-        <dia:composite type="umlattribute">
-          <dia:attribute name="name">
-            <dia:string>#nombre#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="type">
-            <dia:string>#VARCHAR#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="value">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="comment">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="2"/>
-          </dia:attribute>
-          <dia:attribute name="abstract">
-            <dia:boolean val="false"/>
-          </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#descripcion#</dia:string>
+            <dia:string>#creado#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#VARCHAR#</dia:string>
+            <dia:string>#DATE#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
-            <dia:string>#Descripción un poco más detallada del ejercicio#</dia:string>
+            <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
@@ -497,16 +592,16 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#autor_id#</dia:string>
+            <dia:string>#activo#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
+            <dia:string>#BOOL#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
-            <dia:string>#Autor#</dia:string>
+            <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
@@ -520,10 +615,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#creado#</dia:string>
+            <dia:string>#observaciones#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#DATE#</dia:string>
+            <dia:string>#TEXT#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -549,160 +644,73 @@
       <dia:attribute name="templates"/>
       <dia:childnode parent="O0"/>
     </dia:object>
       <dia:attribute name="templates"/>
       <dia:childnode parent="O0"/>
     </dia:object>
-    <dia:object type="UML - Association" version="1" id="O3">
-      <dia:attribute name="obj_pos">
-        <dia:point val="-9.2,1.3"/>
-      </dia:attribute>
-      <dia:attribute name="obj_bb">
-        <dia:rectangle val="-9.25,-0.9;-5.00049,2.2"/>
-      </dia:attribute>
-      <dia:attribute name="orth_points">
-        <dia:point val="-9.2,1.3"/>
-        <dia:point val="-7.12524,1.3"/>
-        <dia:point val="-7.12524,-0.2"/>
-        <dia:point val="-5.05049,-0.2"/>
-      </dia:attribute>
-      <dia:attribute name="orth_orient">
-        <dia:enum val="0"/>
-        <dia:enum val="1"/>
-        <dia:enum val="0"/>
-      </dia:attribute>
-      <dia:attribute name="autorouting">
-        <dia:boolean val="true"/>
-      </dia:attribute>
-      <dia:attribute name="name">
-        <dia:string>##</dia:string>
-      </dia:attribute>
-      <dia:attribute name="direction">
-        <dia:enum val="0"/>
-      </dia:attribute>
-      <dia:attribute name="ends">
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string>#* #</dia:string>
-          </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="aggregate">
-            <dia:enum val="0"/>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="0"/>
-          </dia:attribute>
-        </dia:composite>
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string># 1#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="aggregate">
-            <dia:enum val="0"/>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="0"/>
-          </dia:attribute>
-        </dia:composite>
-      </dia:attribute>
-      <dia:connections>
-        <dia:connection handle="0" to="O5" connection="15"/>
-        <dia:connection handle="1" to="O2" connection="18"/>
-      </dia:connections>
-    </dia:object>
-    <dia:object type="UML - Association" version="1" id="O4">
+    <dia:object type="UML - Note" version="0" id="O5">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="2.85,1.3"/>
+        <dia:point val="8.35,26.6"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="0.05,0.6;3.95,19.6"/>
+        <dia:rectangle val="8.3,26.55;14.2,30.75"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="orth_points">
-        <dia:point val="2.85,1.3"/>
-        <dia:point val="3.85,1.3"/>
-        <dia:point val="3.85,18.7"/>
-        <dia:point val="0.1,18.7"/>
+      <dia:attribute name="elem_corner">
+        <dia:point val="8.35,26.6"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="orth_orient">
-        <dia:enum val="0"/>
-        <dia:enum val="1"/>
-        <dia:enum val="0"/>
+      <dia:attribute name="elem_width">
+        <dia:real val="5.8000000000000007"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="autorouting">
-        <dia:boolean val="true"/>
+      <dia:attribute name="elem_height">
+        <dia:real val="4.1000000000000005"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="name">
-        <dia:string>##</dia:string>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="direction">
-        <dia:enum val="0"/>
+      <dia:attribute name="fill_colour">
+        <dia:color val="#ffffff"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="ends">
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string>#* #</dia:string>
-          </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="aggregate">
-            <dia:enum val="0"/>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#_ es PK física
+# es PK lógica
+- es para
+  polimorfismo#</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="3"/>
+          <dia:attribute name="font">
+            <dia:font family="monospace" style="0" name="Courier"/>
           </dia:attribute>
           </dia:attribute>
-        </dia:composite>
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string>#1#</dia:string>
+          <dia:attribute name="pos">
+            <dia:point val="8.7,27.8"/>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="aggregate">
+          <dia:attribute name="alignment">
             <dia:enum val="0"/>
           </dia:attribute>
             <dia:enum val="0"/>
           </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="3"/>
-          </dia:attribute>
         </dia:composite>
       </dia:attribute>
         </dia:composite>
       </dia:attribute>
-      <dia:connections>
-        <dia:connection handle="0" to="O2" connection="15"/>
-        <dia:connection handle="1" to="O9" connection="4"/>
-      </dia:connections>
+      <dia:childnode parent="O0"/>
     </dia:object>
     </dia:object>
-    <dia:object type="UML - Class" version="0" id="O5">
+    <dia:object type="UML - Class" version="0" id="O6">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-16,-3"/>
+        <dia:point val="0.7,15.25"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-16.05,-3.05;-9.15,2.65"/>
+        <dia:rectangle val="0.65,15.2;6.85,18.5"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-16,-3"/>
+        <dia:point val="0.7,15.25"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
       </dia:attribute>
       <dia:attribute name="elem_width">
-        <dia:real val="6.7999999999999998"/>
+        <dia:real val="6.0999999999999996"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
       </dia:attribute>
       <dia:attribute name="elem_height">
-        <dia:real val="5.5999999999999996"/>
+        <dia:real val="3.2000000000000002"/>
       </dia:attribute>
       <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="name">
-        <dia:string>#ejercicio#</dia:string>
+        <dia:string>#docente#</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
@@ -788,7 +796,7 @@
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#id#</dia:string>
+            <dia:string>#usuario_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -811,10 +819,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#curso_id#</dia:string>
+            <dia:string>#nombrado#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
+            <dia:string>#BOOL#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -823,30 +831,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="2"/>
-          </dia:attribute>
-          <dia:attribute name="abstract">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="class_scope">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-        </dia:composite>
-        <dia:composite type="umlattribute">
-          <dia:attribute name="name">
-            <dia:string>#numero#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="type">
-            <dia:string>#INT#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="value">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="comment">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="2"/>
+            <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -855,9 +840,156 @@
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
             <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Generalization" version="1" id="O7">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-0.225,12.05"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-1.075,12;3.8,15.3"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-0.225,12.05"/>
+        <dia:point val="-0.225,13.65"/>
+        <dia:point val="3.75,13.65"/>
+        <dia:point val="3.75,15.25"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="orth_autoroute">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O4" connection="6"/>
+        <dia:connection handle="1" to="O6" connection="1"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O8">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-7.3,15.25"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-7.35,15.2;-1.15,18.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-7.3,15.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="6.0999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="3.2000000000000002"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#alumno#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#enunciado_id#</dia:string>
+            <dia:string>#usuario_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -875,21 +1007,21 @@
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
-            <dia:boolean val="false"/>
+            <dia:boolean val="true"/>
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#grupal#</dia:string>
+            <dia:string>#nota#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#BOOL#</dia:string>
+            <dia:string>#FLOAT#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
-            <dia:string>#Es grupal (o individual)#</dia:string>
+            <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
@@ -907,94 +1039,63 @@
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
-      <dia:childnode parent="O0"/>
     </dia:object>
     </dia:object>
-    <dia:object type="UML - Association" version="1" id="O6">
+    <dia:object type="UML - Generalization" version="1" id="O9">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-16,-0.3"/>
+        <dia:point val="-0.225,12.05"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-17.05,-1;-13.95,25.6"/>
+        <dia:rectangle val="-4.3,12;0.625,15.3"/>
       </dia:attribute>
       <dia:attribute name="orth_points">
       </dia:attribute>
       <dia:attribute name="orth_points">
-        <dia:point val="-16,-0.3"/>
-        <dia:point val="-17,-0.3"/>
-        <dia:point val="-17,24.7"/>
-        <dia:point val="-14,24.7"/>
+        <dia:point val="-0.225,12.05"/>
+        <dia:point val="-0.225,13.65"/>
+        <dia:point val="-4.25,13.65"/>
+        <dia:point val="-4.25,15.25"/>
       </dia:attribute>
       <dia:attribute name="orth_orient">
       </dia:attribute>
       <dia:attribute name="orth_orient">
-        <dia:enum val="0"/>
         <dia:enum val="1"/>
         <dia:enum val="0"/>
         <dia:enum val="1"/>
         <dia:enum val="0"/>
+        <dia:enum val="1"/>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="autorouting">
+      <dia:attribute name="orth_autoroute">
         <dia:boolean val="true"/>
       </dia:attribute>
         <dia:boolean val="true"/>
       </dia:attribute>
+      <dia:attribute name="text_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="line_colour">
+        <dia:color val="#000000"/>
+      </dia:attribute>
       <dia:attribute name="name">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="name">
         <dia:string>##</dia:string>
       </dia:attribute>
-      <dia:attribute name="direction">
-        <dia:enum val="0"/>
-      </dia:attribute>
-      <dia:attribute name="ends">
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string>#*#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="aggregate">
-            <dia:enum val="0"/>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="0"/>
-          </dia:attribute>
-        </dia:composite>
-        <dia:composite>
-          <dia:attribute name="role">
-            <dia:string>##</dia:string>
-          </dia:attribute>
-          <dia:attribute name="multiplicity">
-            <dia:string>#1#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="arrow">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="aggregate">
-            <dia:enum val="0"/>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="0"/>
-          </dia:attribute>
-        </dia:composite>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
       </dia:attribute>
       <dia:connections>
       </dia:attribute>
       <dia:connections>
-        <dia:connection handle="0" to="O5" connection="10"/>
-        <dia:connection handle="1" to="O1" connection="3"/>
+        <dia:connection handle="0" to="O4" connection="6"/>
+        <dia:connection handle="1" to="O8" connection="1"/>
       </dia:connections>
     </dia:object>
       </dia:connections>
     </dia:object>
-    <dia:object type="UML - Class" version="0" id="O7">
+    <dia:object type="UML - Class" version="0" id="O10">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-11,5"/>
+        <dia:point val="-18.58,10.52"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-11.05,4.95;-3.1,14.65"/>
+        <dia:rectangle val="-18.63,10.47;-9.98,15.37"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-11,5"/>
+        <dia:point val="-18.58,10.52"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
       </dia:attribute>
       <dia:attribute name="elem_width">
-        <dia:real val="7.8499999999999996"/>
+        <dia:real val="8.5500000000000007"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
       </dia:attribute>
       <dia:attribute name="elem_height">
-        <dia:real val="9.5999999999999996"/>
+        <dia:real val="4.8000000000000007"/>
       </dia:attribute>
       <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="name">
-        <dia:string>#usuario#</dia:string>
+        <dia:string>#entregador#</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
@@ -1003,7 +1104,7 @@
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="abstract">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="abstract">
-        <dia:boolean val="true"/>
+        <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="suppress_attributes">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="suppress_attributes">
         <dia:boolean val="false"/>
@@ -1080,7 +1181,7 @@
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#id#</dia:string>
+            <dia:string>#nota#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -1103,42 +1204,19 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#tipo#</dia:string>
+            <dia:string>#nota_cursada#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#CHAR(1)#</dia:string>
+            <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
-            <dia:string>#Tipo de usuario para polimorfismo: 'd' (docente), 'a' (alumno) o 'u' (usuario, en realidad no debería estar nunca).#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="1"/>
-          </dia:attribute>
-          <dia:attribute name="abstract">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-          <dia:attribute name="class_scope">
-            <dia:boolean val="false"/>
-          </dia:attribute>
-        </dia:composite>
-        <dia:composite type="umlattribute">
-          <dia:attribute name="name">
-            <dia:string>#usuario#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="type">
-            <dia:string>#VARCHAR#</dia:string>
-          </dia:attribute>
-          <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
             <dia:string>##</dia:string>
           </dia:attribute>
-          <dia:attribute name="comment">
-            <dia:string>#Para alumnos es el padrón, para docentes el usuario que les plazca (que no pueda ser un padrón válido).#</dia:string>
-          </dia:attribute>
           <dia:attribute name="visibility">
           <dia:attribute name="visibility">
-            <dia:enum val="2"/>
+            <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -1149,10 +1227,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#email#</dia:string>
+            <dia:string>#activo#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#VARCHAR#</dia:string>
+            <dia:string>#BOOL#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -1161,7 +1239,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="0"/>
+            <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -1172,7 +1250,7 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#contrasenia#</dia:string>
+            <dia:string>#observaciones#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#VARCHAR#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#VARCHAR#</dia:string>
@@ -1190,15 +1268,1711 @@
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
-            <dia:boolean val="false"/>
+            <dia:boolean val="true"/>
           </dia:attribute>
         </dia:composite>
           </dia:attribute>
         </dia:composite>
-        <dia:composite type="umlattribute">
-          <dia:attribute name="name">
-            <dia:string>#nombre#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="operations"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O11">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-14.255,20.07"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-15.1055,15.2616;-13.5045,20.1205"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="-14.255,20.07"/>
+        <dia:point val="-14.305,15.32"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="2"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.79999999999999993"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.79999999999999993"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O21" connection="1"/>
+        <dia:connection handle="1" to="O10" connection="6"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O12">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-23.18,14.12"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-23.255,13.55;-22.63,20.72"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-23.18,14.12"/>
+        <dia:point val="-23.18,14.25"/>
+        <dia:point val="-23.205,14.25"/>
+        <dia:point val="-23.205,19.92"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O19" connection="6"/>
+        <dia:connection handle="1" to="O20" connection="1"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O13">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-23.205,26.52"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-23.255,26.47;-13.705,28.8"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-23.205,26.52"/>
+        <dia:point val="-23.205,28.7"/>
+        <dia:point val="-14.255,28.7"/>
+        <dia:point val="-14.255,26.67"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O20" connection="6"/>
+        <dia:connection handle="1" to="O21" connection="6"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O14">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-4.25,18.45"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-10.38,18.4;-3.7,24.37"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-4.25,18.45"/>
+        <dia:point val="-4.25,23.5"/>
+        <dia:point val="-10.33,23.5"/>
+        <dia:point val="-10.33,23.57"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O8" connection="6"/>
+        <dia:connection handle="1" to="O21" connection="13"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="Standard - Text" version="1" id="O15">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-4.25,16.85"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-4.25,16.3;-4.25,17.25"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font family="sans" style="0" name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.80000000000000004"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="-4.25,16.85"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="valign">
+        <dia:enum val="3"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O8" connection="12"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O16">
+      <dia:attribute name="obj_pos">
+        <dia:point val="6.8,17.95"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="6.07,17.25;10.6,24.57"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="6.8,17.95"/>
+        <dia:point val="10.5,17.95"/>
+        <dia:point val="10.5,23.67"/>
+        <dia:point val="6.12,23.67"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O6" connection="11"/>
+        <dia:connection handle="1" to="O22" connection="13"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O17">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-23.205,26.5698"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-23.255,26.5198;2.82,29.9992"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-23.205,26.5698"/>
+        <dia:point val="-23.205,29.8992"/>
+        <dia:point val="2.27,29.8992"/>
+        <dia:point val="2.27,26.77"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#*#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O20" connection="20"/>
+        <dia:connection handle="1" to="O22" connection="6"/>
+      </dia:connections>
+      <dia:childnode parent="O0"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O18">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.67,-3.03"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.62,-3.08;12.92,7.62"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="4.67,-3.03"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="8.1999999999999993"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="10.6"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#enunciado#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="0.69999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#anio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#cuatrimestre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#descripcion#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#autor_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#creado#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TIME#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#archivo#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TEXT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#archivo_name#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#archivo_type#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O19">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-26.93,8.32"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-26.98,8.27;-19.38,14.17"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-26.93,8.32"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.5"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="5.8000000000000007"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#grupo#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="0.69999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#nombre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#responsable_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O20">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-27.13,19.92"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-27.18,19.87;-19.23,26.57"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-27.13,19.92"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.8499999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#curso#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="0.69999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#anio#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#cuatrimestre#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#descripcion#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#VARCHAR#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O21">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-18.18,20.07"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-18.23,20.02;-10.28,26.72"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-18.18,20.07"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.8499999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#alumno_inscripto#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="0.69999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#alumno_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#condicional#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TINYINT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#tutor_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
+    </dia:object>
+    <dia:object type="UML - Class" version="0" id="O22">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-1.58,20.17"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-1.63,20.12;6.17,26.82"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="-1.58,20.17"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="7.7000000000000002"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.5999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="name">
+        <dia:string>#docente_inscripto#</dia:string>
+      </dia:attribute>
+      <dia:attribute name="stereotype">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="comment">
+        <dia:string>##</dia:string>
+      </dia:attribute>
+      <dia:attribute name="abstract">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_attributes">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="suppress_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="visible_attributes">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_operations">
+        <dia:boolean val="true"/>
+      </dia:attribute>
+      <dia:attribute name="visible_comments">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_operations">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="wrap_after_char">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_line_length">
+        <dia:int val="40"/>
+      </dia:attribute>
+      <dia:attribute name="comment_tagging">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="line_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="fill_color">
+        <dia:color val="#ffffff"/>
+      </dia:attribute>
+      <dia:attribute name="text_color">
+        <dia:color val="#000000"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font">
+        <dia:font family="monospace" style="0" name="Courier"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font">
+        <dia:font family="monospace" style="88" name="Courier-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font">
+        <dia:font family="monospace" style="8" name="Courier-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font">
+        <dia:font family="sans" style="80" name="Helvetica-Bold"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font">
+        <dia:font family="sans" style="88" name="Helvetica-BoldOblique"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font">
+        <dia:font family="sans" style="8" name="Helvetica-Oblique"/>
+      </dia:attribute>
+      <dia:attribute name="normal_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="polymorphic_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_font_height">
+        <dia:real val="0.80000000000000004"/>
+      </dia:attribute>
+      <dia:attribute name="classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="abstract_classname_font_height">
+        <dia:real val="1"/>
+      </dia:attribute>
+      <dia:attribute name="comment_font_height">
+        <dia:real val="0.69999999999999996"/>
+      </dia:attribute>
+      <dia:attribute name="attributes">
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#VARCHAR#</dia:string>
+            <dia:string>#INTEGER#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -1207,18 +2981,18 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="3"/>
+            <dia:enum val="0"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
-            <dia:boolean val="false"/>
+            <dia:boolean val="true"/>
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#telefono#</dia:string>
+            <dia:string>#curso_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -1230,7 +3004,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="3"/>
+            <dia:enum val="2"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -1241,10 +3015,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#creado#</dia:string>
+            <dia:string>#docente_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#DATE#</dia:string>
+            <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -1253,7 +3027,7 @@
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="visibility">
-            <dia:enum val="3"/>
+            <dia:enum val="2"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
@@ -1264,10 +3038,10 @@
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#activo#</dia:string>
+            <dia:string>#corrige#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#BOOL#</dia:string>
+            <dia:string>#TINYINT#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -1309,80 +3083,79 @@
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
-      <dia:attribute name="operations"/>
-      <dia:attribute name="template">
-        <dia:boolean val="false"/>
-      </dia:attribute>
-      <dia:attribute name="templates"/>
-      <dia:childnode parent="O0"/>
-    </dia:object>
-    <dia:object type="UML - Note" version="0" id="O8">
-      <dia:attribute name="obj_pos">
-        <dia:point val="-2,26"/>
-      </dia:attribute>
-      <dia:attribute name="obj_bb">
-        <dia:rectangle val="-2.05,25.95;3.85,30.15"/>
-      </dia:attribute>
-      <dia:attribute name="elem_corner">
-        <dia:point val="-2,26"/>
-      </dia:attribute>
-      <dia:attribute name="elem_width">
-        <dia:real val="5.8000000000000007"/>
-      </dia:attribute>
-      <dia:attribute name="elem_height">
-        <dia:real val="4.1000000000000005"/>
-      </dia:attribute>
-      <dia:attribute name="line_colour">
-        <dia:color val="#000000"/>
-      </dia:attribute>
-      <dia:attribute name="fill_colour">
-        <dia:color val="#ffffff"/>
-      </dia:attribute>
-      <dia:attribute name="text">
-        <dia:composite type="text">
-          <dia:attribute name="string">
-            <dia:string>#_ es PK física
-# es PK lógica
-- es para
-  polimorfismo#</dia:string>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="font">
-            <dia:font family="monospace" style="0" name="Courier"/>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="height">
-            <dia:real val="0.80000000000000004"/>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="pos">
-            <dia:point val="-1.65,27.2"/>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="color">
-            <dia:color val="#000000"/>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="alignment">
-            <dia:enum val="0"/>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
-      <dia:childnode parent="O0"/>
+      <dia:attribute name="template">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="templates"/>
     </dia:object>
     </dia:object>
-    <dia:object type="UML - Class" version="0" id="O9">
+    <dia:object type="UML - Class" version="0" id="O23">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-6,18"/>
+        <dia:point val="-27.13,-3.005"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-6.05,17.95;0.15,21.25"/>
+        <dia:rectangle val="-27.18,-3.055;-19.63,3.645"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-6,18"/>
+        <dia:point val="-27.13,-3.005"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
       </dia:attribute>
       <dia:attribute name="elem_width">
-        <dia:real val="6.0999999999999996"/>
+        <dia:real val="7.4500000000000002"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
       </dia:attribute>
       <dia:attribute name="elem_height">
-        <dia:real val="3.2000000000000002"/>
+        <dia:real val="6.5999999999999996"/>
       </dia:attribute>
       <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="name">
-        <dia:string>#docente#</dia:string>
+        <dia:string>#ejercicio#</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
@@ -1403,13 +3176,13 @@
         <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_operations">
         <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_operations">
-        <dia:boolean val="false"/>
+        <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_comments">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_operations">
       </dia:attribute>
       <dia:attribute name="visible_comments">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_operations">
-        <dia:boolean val="true"/>
+        <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_after_char">
         <dia:int val="40"/>
       </dia:attribute>
       <dia:attribute name="wrap_after_char">
         <dia:int val="40"/>
@@ -1463,12 +3236,81 @@
         <dia:real val="1"/>
       </dia:attribute>
       <dia:attribute name="comment_font_height">
         <dia:real val="1"/>
       </dia:attribute>
       <dia:attribute name="comment_font_height">
-        <dia:real val="1"/>
+        <dia:real val="0.69999999999999996"/>
       </dia:attribute>
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#usuario_id#</dia:string>
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#curso_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#numero#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#enunciado_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -1486,96 +3328,106 @@
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
-            <dia:boolean val="true"/>
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#grupal#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TINYINT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="3"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
           </dia:attribute>
         </dia:composite>
-        <dia:composite type="umlattribute">
+      </dia:attribute>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
           <dia:attribute name="name">
           <dia:attribute name="name">
-            <dia:string>#nombreado#</dia:string>
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#BOOL#</dia:string>
+            <dia:string>#pk#</dia:string>
           </dia:attribute>
           </dia:attribute>
-          <dia:attribute name="value">
-            <dia:string>##</dia:string>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
           </dia:attribute>
           <dia:attribute name="comment">
             <dia:string>##</dia:string>
           </dia:attribute>
           </dia:attribute>
           <dia:attribute name="comment">
             <dia:string>##</dia:string>
           </dia:attribute>
-          <dia:attribute name="visibility">
-            <dia:enum val="3"/>
-          </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="abstract">
             <dia:boolean val="false"/>
           </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
         </dia:composite>
       </dia:attribute>
         </dia:composite>
       </dia:attribute>
-      <dia:attribute name="operations"/>
       <dia:attribute name="template">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
     </dia:object>
       <dia:attribute name="template">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
     </dia:object>
-    <dia:object type="UML - Generalization" version="1" id="O10">
-      <dia:attribute name="obj_pos">
-        <dia:point val="-7.075,14.6"/>
-      </dia:attribute>
-      <dia:attribute name="obj_bb">
-        <dia:rectangle val="-7.925,14.55;-2.9,18.05"/>
-      </dia:attribute>
-      <dia:attribute name="orth_points">
-        <dia:point val="-7.075,14.6"/>
-        <dia:point val="-7.075,16.3"/>
-        <dia:point val="-2.95,16.3"/>
-        <dia:point val="-2.95,18"/>
-      </dia:attribute>
-      <dia:attribute name="orth_orient">
-        <dia:enum val="1"/>
-        <dia:enum val="0"/>
-        <dia:enum val="1"/>
-      </dia:attribute>
-      <dia:attribute name="orth_autoroute">
-        <dia:boolean val="true"/>
-      </dia:attribute>
-      <dia:attribute name="text_colour">
-        <dia:color val="#000000"/>
-      </dia:attribute>
-      <dia:attribute name="line_colour">
-        <dia:color val="#000000"/>
-      </dia:attribute>
-      <dia:attribute name="name">
-        <dia:string>##</dia:string>
-      </dia:attribute>
-      <dia:attribute name="stereotype">
-        <dia:string>##</dia:string>
-      </dia:attribute>
-      <dia:connections>
-        <dia:connection handle="0" to="O7" connection="6"/>
-        <dia:connection handle="1" to="O9" connection="1"/>
-      </dia:connections>
-      <dia:childnode parent="O0"/>
-    </dia:object>
-    <dia:object type="UML - Class" version="0" id="O11">
+    <dia:object type="UML - Class" version="0" id="O24">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-14,18"/>
+        <dia:point val="-15.98,2.72"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-14.05,17.95;-7.85,21.25"/>
+        <dia:rectangle val="-16.03,2.67;-8.48,9.37"/>
       </dia:attribute>
       <dia:attribute name="elem_corner">
       </dia:attribute>
       <dia:attribute name="elem_corner">
-        <dia:point val="-14,18"/>
+        <dia:point val="-15.98,2.72"/>
       </dia:attribute>
       <dia:attribute name="elem_width">
       </dia:attribute>
       <dia:attribute name="elem_width">
-        <dia:real val="6.0999999999999996"/>
+        <dia:real val="7.4500000000000002"/>
       </dia:attribute>
       <dia:attribute name="elem_height">
       </dia:attribute>
       <dia:attribute name="elem_height">
-        <dia:real val="3.2000000000000002"/>
+        <dia:real val="6.5999999999999996"/>
       </dia:attribute>
       <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="name">
-        <dia:string>#alumno#</dia:string>
+        <dia:string>#miembro#</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
       </dia:attribute>
       <dia:attribute name="stereotype">
         <dia:string>##</dia:string>
@@ -1596,13 +3448,13 @@
         <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_operations">
         <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_operations">
-        <dia:boolean val="false"/>
+        <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="visible_comments">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_operations">
       </dia:attribute>
       <dia:attribute name="visible_comments">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_operations">
-        <dia:boolean val="true"/>
+        <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="wrap_after_char">
         <dia:int val="40"/>
       </dia:attribute>
       <dia:attribute name="wrap_after_char">
         <dia:int val="40"/>
@@ -1656,12 +3508,58 @@
         <dia:real val="1"/>
       </dia:attribute>
       <dia:attribute name="comment_font_height">
         <dia:real val="1"/>
       </dia:attribute>
       <dia:attribute name="comment_font_height">
-        <dia:real val="1"/>
+        <dia:real val="0.69999999999999996"/>
       </dia:attribute>
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
       </dia:attribute>
       <dia:attribute name="attributes">
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#usuario_id#</dia:string>
+            <dia:string>#id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INTEGER#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="true"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#grupo_id#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#INT#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#alumno_id#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
             <dia:string>#INT#</dia:string>
@@ -1672,6 +3570,29 @@
           <dia:attribute name="comment">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="comment">
             <dia:string>##</dia:string>
           </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite type="umlattribute">
+          <dia:attribute name="name">
+            <dia:string>#alta#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#TIME#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="value">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
           </dia:attribute>
           <dia:attribute name="visibility">
             <dia:enum val="3"/>
           </dia:attribute>
@@ -1679,15 +3600,15 @@
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
             <dia:boolean val="false"/>
           </dia:attribute>
           <dia:attribute name="class_scope">
-            <dia:boolean val="true"/>
+            <dia:boolean val="false"/>
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
           </dia:attribute>
         </dia:composite>
         <dia:composite type="umlattribute">
           <dia:attribute name="name">
-            <dia:string>#nota#</dia:string>
+            <dia:string>#baja#</dia:string>
           </dia:attribute>
           <dia:attribute name="type">
           </dia:attribute>
           <dia:attribute name="type">
-            <dia:string>#FLOAT#</dia:string>
+            <dia:string>#TIME#</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
           </dia:attribute>
           <dia:attribute name="value">
             <dia:string>##</dia:string>
@@ -1706,48 +3627,193 @@
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
           </dia:attribute>
         </dia:composite>
       </dia:attribute>
-      <dia:attribute name="operations"/>
+      <dia:attribute name="operations">
+        <dia:composite type="umloperation">
+          <dia:attribute name="name">
+            <dia:string>#Primary Key#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="stereotype">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="type">
+            <dia:string>#pk#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="comment">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="abstract">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="inheritance_type">
+            <dia:enum val="2"/>
+          </dia:attribute>
+          <dia:attribute name="query">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="class_scope">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="parameters">
+            <dia:composite type="umlparameter">
+              <dia:attribute name="name">
+                <dia:string>#id#</dia:string>
+              </dia:attribute>
+              <dia:attribute name="type">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="value">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="comment">
+                <dia:string>##</dia:string>
+              </dia:attribute>
+              <dia:attribute name="kind">
+                <dia:enum val="0"/>
+              </dia:attribute>
+            </dia:composite>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
       <dia:attribute name="template">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
     </dia:object>
       <dia:attribute name="template">
         <dia:boolean val="false"/>
       </dia:attribute>
       <dia:attribute name="templates"/>
     </dia:object>
-    <dia:object type="UML - Generalization" version="1" id="O12">
+    <dia:object type="UML - Association" version="1" id="O25">
       <dia:attribute name="obj_pos">
       <dia:attribute name="obj_pos">
-        <dia:point val="-7.075,14.6"/>
+        <dia:point val="-15.98,5.42"/>
       </dia:attribute>
       <dia:attribute name="obj_bb">
       </dia:attribute>
       <dia:attribute name="obj_bb">
-        <dia:rectangle val="-11,14.55;-6.225,18.05"/>
+        <dia:rectangle val="-23.23,4.72;-15.93,9.12"/>
       </dia:attribute>
       <dia:attribute name="orth_points">
       </dia:attribute>
       <dia:attribute name="orth_points">
-        <dia:point val="-7.075,14.6"/>
-        <dia:point val="-7.075,16.3"/>
-        <dia:point val="-10.95,16.3"/>
-        <dia:point val="-10.95,18"/>
+        <dia:point val="-15.98,5.42"/>
+        <dia:point val="-23.18,5.42"/>
+        <dia:point val="-23.18,8.32"/>
       </dia:attribute>
       <dia:attribute name="orth_orient">
       </dia:attribute>
       <dia:attribute name="orth_orient">
-        <dia:enum val="1"/>
         <dia:enum val="0"/>
         <dia:enum val="1"/>
       </dia:attribute>
         <dia:enum val="0"/>
         <dia:enum val="1"/>
       </dia:attribute>
-      <dia:attribute name="orth_autoroute">
+      <dia:attribute name="autorouting">
         <dia:boolean val="true"/>
       </dia:attribute>
         <dia:boolean val="true"/>
       </dia:attribute>
-      <dia:attribute name="text_colour">
-        <dia:color val="#000000"/>
+      <dia:attribute name="name">
+        <dia:string>##</dia:string>
       </dia:attribute>
       </dia:attribute>
-      <dia:attribute name="line_colour">
-        <dia:color val="#000000"/>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#* #</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O24" connection="10"/>
+        <dia:connection handle="1" to="O19" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Association" version="1" id="O26">
+      <dia:attribute name="obj_pos">
+        <dia:point val="-8.53,6.22"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="-8.58,5.52;-7.30038,17.75"/>
+      </dia:attribute>
+      <dia:attribute name="orth_points">
+        <dia:point val="-8.53,6.22"/>
+        <dia:point val="-7.94019,6.22"/>
+        <dia:point val="-7.94019,16.85"/>
+        <dia:point val="-7.35038,16.85"/>
+      </dia:attribute>
+      <dia:attribute name="orth_orient">
+        <dia:enum val="0"/>
+        <dia:enum val="1"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="autorouting">
+        <dia:boolean val="true"/>
       </dia:attribute>
       <dia:attribute name="name">
         <dia:string>##</dia:string>
       </dia:attribute>
       </dia:attribute>
       <dia:attribute name="name">
         <dia:string>##</dia:string>
       </dia:attribute>
-      <dia:attribute name="stereotype">
-        <dia:string>##</dia:string>
+      <dia:attribute name="direction">
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="ends">
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+        <dia:composite>
+          <dia:attribute name="role">
+            <dia:string>##</dia:string>
+          </dia:attribute>
+          <dia:attribute name="multiplicity">
+            <dia:string># 1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="arrow">
+            <dia:boolean val="false"/>
+          </dia:attribute>
+          <dia:attribute name="aggregate">
+            <dia:enum val="0"/>
+          </dia:attribute>
+          <dia:attribute name="visibility">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
       </dia:attribute>
       <dia:connections>
       </dia:attribute>
       <dia:connections>
-        <dia:connection handle="0" to="O7" connection="6"/>
-        <dia:connection handle="1" to="O11" connection="1"/>
+        <dia:connection handle="0" to="O24" connection="13"/>
+        <dia:connection handle="1" to="O8" connection="12"/>
       </dia:connections>
     </dia:object>
   </dia:layer>
       </dia:connections>
     </dia:object>
   </dia:layer>
Sistema de entrega electrónica de Taller de Programación I