Re: database design method

From: Leandro Guimarães Faria Corsetti Dutra <lgcdutra_at_terra.com.br>
Date: Fri, 25 Oct 2002 15:37:33 +0200
Message-ID: <apbhet$3qh1$2@ID-148886.news.dfncis.de>

Jan.Hidders wrote:

> In article , Leandro Guimarães Faria Corsetti Dutra 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.

Now I want to see it. References, please. You may want to be informed of articles against your view in http://dbdebunk.com./, for instance.

BTW, it is not simply "1st order logic", but Set Theory *and* 1st Order _Predicate_ Logic.

-- 
  _
/ \ Leandro Guimarães Faria Corsetti Dutra        +41 (21) 216 15 93
\ / http://homepage.mac.com./leandrod/        fax +41 (21) 216 19 04
  X  http://tutoriald.sourceforge.net./      Orange Communications CH
/ \ Campanha fita ASCII, contra correio HTML      +41 (21) 644 23 01

Received on Fri Oct 25 2002 - 08:37:33 CDT