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Re: Constraints and Functional Dependencies

From: Marshall <marshall.spight_at_gmail.com>
Date: 24 Feb 2007 17:50:11 -0800
Message-ID: <1172368211.648949.22410@k78g2000cwa.googlegroups.com> 





On Feb 24, 11:28 am, paul c <toledobythe..._at_oohay.ac> wrote:

>




> It looked to me as if the OP did define it.  I've seen the same

> definition expressed in equivalent algebra here many moons ago.




Specifically I defined a particular kind of FD which is equivalent
to a candidate key. An FD in turn being a particular kind
of constraint.



Hmmm. Can we express keyness otherwise? I can't think how.




Marshall
Received on Sat Feb 24 2007 - 19:50:11 CST












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