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Two relations with the same attributes (was: 3 value logic. Why is SQL so special?)

From: mAsterdam <mAsterdam_at_vrijdag.org>
Date: Sun, 17 Sep 2006 09:06:19 +0200
Message-ID: <450cf3ad$0$4527$e4fe514c@news.xs4all.nl> 





Cimode wrote:


>  If 2 relations have the same attributes then they should be one

> relation.  




No. As long as the name of the relation and the meaning of the 
propositions differ it is ok to have two relations with the same 
attributes. The meaning of the propositions depends on the external
predicate.
Received on Sun Sep 17 2006 - 02:06:19 CDT












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