Re: database design method

From: Jan.Hidders <hidders_at_hcoss.uia.ac.be>
Date: 25 Oct 2002 13:30:41 +0200
Message-ID: <3db92b61$1_at_news.uia.ac.be>

In article <apb7ce$obu$1_at_ID-148886.news.dfncis.de>, Leandro Guimar�es Faria Corsetti Dutra <lgcdutra_at_terra.com.br> wrote:
>
>Wrong, ER can't capture all of the organisation's rules, because it has no
>equivalent to all integrity constraints in the database.

Sure it has. It can use the same language that you can use for the relational model: 1st order logic.

Jan Hidders

Received on Fri Oct 25 2002 - 13:30:41 CEST

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