+ <dia:object type="UML - Note" version="0" id="O40">
+ <dia:attribute name="obj_pos">
+ <dia:point val="45.0001,-0.715"/>
+ </dia:attribute>
+ <dia:attribute name="obj_bb">
+ <dia:rectangle val="44.9501,-0.765;58.8501,5.035"/>
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+ <dia:attribute name="elem_corner">
+ <dia:point val="45.0001,-0.715"/>
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+ <dia:attribute name="elem_width">
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+ <dia:attribute name="elem_height">
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+ <dia:attribute name="line_colour">
+ <dia:color val="#000000"/>
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+ <dia:color val="#ffffff"/>
+ </dia:attribute>
+ <dia:attribute name="text">
+ <dia:composite type="text">
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+ <dia:string>#Las claves primarias naturales se
+representan con un # (el conjunto de
+atributos marcados con # en una tabla
+componen la clave primaria natural).
+Cada tabla tiene un indice compuesto
+por estos atributos.#</dia:string>
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+ <dia:font family="monospace" style="0" name="Courier"/>
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+ <dia:attribute name="pos">
+ <dia:point val="45.3501,0.535"/>
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+ <dia:attribute name="color">
+ <dia:color val="#000000"/>
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+ <dia:attribute name="alignment">
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+ </dia:composite>
+ </dia:attribute>
+ </dia:object>