Re: Entities and relationships

From: Bob Badour <>
Date: Fri, 12 Oct 2007 16:33:22 -0300
Message-ID: <470fcbc6$0$14853$>

Tegiri Nenashi wrote:

> I never really took any effort to bother to know what these are until
> they got in my way in otherwise fine paper:
> It defines an entity as a relation (aka table:-) with a single
> noncomposite key, and relationship as a table with composite key. Does
> this definition pretty much exhausts the entity-relationship theory?

Um, no, because an order line item is generally an entity--albeit a weak one. If I recall correctly. Received on Fri Oct 12 2007 - 21:33:22 CEST

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