Re: BCNF: superkey or candidate key ?
From: <masong_at_sbcglobal.net>
Date: Mon, 25 Sep 2006 18:27:32 GMT
Message-ID: <1159208936_29233_at_sp6iad.superfeed.net>
Date: Mon, 25 Sep 2006 18:27:32 GMT
Message-ID: <1159208936_29233_at_sp6iad.superfeed.net>
Yes it would, but the determinant in B -> X is not a candidate key, it can
be reduced, it's a superkey.
Maybe the answer is that considering the closure of FDs, we find that
candidate key is too strong a term and that superkey is now accurate.
Received on Mon Sep 25 2006 - 20:27:32 CEST