Re: Enforcing functional dependecy constraints
From: David Cressey <dcressey_at_verizon.net>
Date: Tue, 13 Dec 2005 13:43:28 GMT
Message-ID: <4eAnf.3768$Kk7.1838_at_trndny05>
Date: Tue, 13 Dec 2005 13:43:28 GMT
Message-ID: <4eAnf.3768$Kk7.1838_at_trndny05>
"David Cressey" <dcressey_at_verizon.net> wrote in message news:PKznf.1173$Y2.1015_at_trndny04...
> > This is the standard theoretical decomposition.
> > How the AB->C is enforced ?
> >
>
> I've got to think this one through. DEC Rdb VMS had inter-table
constraints
> way back when.
> I never had to use them, though, so it's going to take a little thought.
> And I can't say in advance whether I'm going to come up with a good
answer.
I must be slipping in my old age. Of course I've used inter-table
constraints!
Referential integrity is an inter-table constraint! And I've used that just
about all the time!
Received on Tue Dec 13 2005 - 14:43:28 CET