Re: Natural keys vs Aritficial Keys

On May 30, 10:30 am, paul c <toledobythe..._at_oohay.ac> wrote:
> David BL wrote:
> >....
> > Minimal theory of what? A relational database by definition has
> > relvars. Relvars are essential to relational database theory.
> > ....
>
> I think you have looked at TTM with the same casualness as you proof
> your own paragraphs. TTM is about a language, very little of it has to
> do with the RM, certainly not relvars.

You aren't making yourself clear. So how do you deduce I'm mixing concepts by referring to relvars? Received on Sat May 30 2009 - 05:47:13 CEST