Re: Basic question?What 's the key if there 's no FD(Functional Dependencies)?

From: Godspeed <>
Date: Wed, 01 Nov 2006 12:31:05 GMT
Message-ID: <ds02h.57077$>

<> wrote in message
> I have a basic question.
> Suppose there are 3 attributes: A,B and C.
> And there are no FD(trivial and non trivial )
> What 's the key for it? ABC or nothing???

It's either {ABC} or {D} where D is an artificial identifier (e.g. a sequence number). Received on Wed Nov 01 2006 - 13:31:05 CET

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