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Re: Relation Schemata vs. Relation Variables

From: Marshall <marshall.spight_at_gmail.com>
Date: 24 Aug 2006 18:37:28 -0700
Message-ID: <1156469848.588801.213960@i42g2000cwa.googlegroups.com> 





Bob Badour wrote:


> The concept of a candidate key is pretty much meaningless

> with respect to relations.




Mmm, I'm going to have to disagree with that one. It's meaningless
as a prescriptive constraint, yes. But it still has descriptive value.




> What is irreducible for a relvar may very well be reducible

> for the relvar's current value.




This one I agree with.




Marshall
Received on Thu Aug 24 2006 - 20:37:28 CDT












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