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From: Alfredo Novoa <alfredo_novoa@hotmail.com>
Newsgroups: comp.databases.theory
Subject: Re: Translating constraints to  RM Terms
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Date: Mon, 06 Jun 2005 16:18:43 +0200
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Xref: dp-news.maxwell.syr.edu comp.databases.theory:31248

On Mon, 06 Jun 2005 08:05:36 -0400, Kenneth Downs
<knode.wants.this@see.sigblock> wrote:

>Then I guess my question is restated, does the RM have anything to say about
>defining one column in terms of another? 

Queries.

> While the constraint is generally
>expressed and accepted as existing as a property of the *table*, is it not
>in fact a fundamental property of COLUMN A?  

It is not.


Regards