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clave externa múltiple
Posted by: fernando guillen
Date: July 17, 2007 07:56AM

Querida gente:

¿Es posible definir una clave externa a partir de dos campos?:

Uno define a que tabla apunta y el otro contiene el id del registro de la tabla externa.

Mi problema intento definirlo mucho mejor aquí:
http://www.fernandoguillen.info/2007/07/17/cuando-el-modelado-de-una-relacion-entre-3-tablas-se-vuelve-un-ejercicio-de-arquitectura/

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