Re: Enforcing functional dependecy constraints

From: David Cressey <david.cressey_at_earthlink.net>
Date: Fri, 09 Dec 2005 02:20:35 GMT
Message-ID: <TR5mf.1383$3Z.926@newsread1.news.atl.earthlink.net>

"paul c" <toledobythesea_at_oohay.ac> wrote in message news:WwKlf.63515$ki.5786_at_pd7tw2no...
> paul c wrote:
> > ...
> >
> > I agree with David but also I guess that the above comes down to saying
> > that BCNF is possible either with S(A,C) and T(C,B) or with U(A,B) and
> > T(C,B), assuming that C is a key.
> >
>
> Oops, meant to say "assuming C is a key of T".
>
>
> p

I don't see how to reconstruct R (A,B,C) from U(A,B) and T(C,B) Received on Thu Dec 08 2005 - 20:20:35 CST

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