Re: thinking about UPDATE
From: x <x-false_at_yahoo.com>
Date: Thu, 29 Jul 2004 09:12:36 +0300
Message-ID: <4108954c$1_at_post.usenet.com>
Date: Thu, 29 Jul 2004 09:12:36 +0300
Message-ID: <4108954c$1_at_post.usenet.com>
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> > Are you aware of any algorithm that solve this problem ? What is
> > the complexity of it ?
> Which problem exactly? To derive the CKs in the projection given a set of
> CKs in the original relation? That algorithm I already gave in this
> thread. Or do you want to start from a set of FDs?
From a set of constraints.
For example FD, MVD, JD, inclusion dependencies, and maybe interval
constraints, cardinality constraints.
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