Re: Constraints and Functional Dependencies

On 25 fév, 02:50, "Marshall" <marshall.spi...@xxxxxxxxx> wrote:
On Feb 24, 11:28 am, paul c <toledobythe...@xxxxxxxx> wrote:
[Snipped]

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.
Good intuition. See alternate formal definition proposed.

Marshall


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