Re: Relation Schemata vs. Relation Variables

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 Fri Aug 25 2006 - 03:37:28 CEST