Re: database design method

From: Leandro Guimarães Faria Corsetti Dutra <lgcdutra_at_terra.com.br>
Date: Fri, 08 Nov 2002 12:16:27 +0100
Message-ID: <aqg6eb$9dma6$2@ID-148886.news.dfncis.de>

Alfredo Novoa wrote:

> On Mon, 04 Nov 2002 08:59:59 +0100,
> =?ISO-8859-1?Q?Leandro_Guimar=E3es_Faria_Corsetti_Dutra?= wrote:
>

>> Obviously he means to write the full model, from domains to relvars
>> and constraints, and then choose specific portions that need to be 
>> graphically represented as ERDs or whatever.

>
> Yes, domain and relvar definitions are also constraint definitions or
> rule definitions if you like more.
>
> And ERDs are never necessary, but it may be useful in order to give a
> quick view.

        Agreed.

> And ORM diagrams seems to be better than ERDs in all cases.

        Can you expand or provide pointers?

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Received on Fri Nov 08 2002 - 05:16:27 CST