Re: Natural keys vs Aritficial Keys
Date: Sat, 30 May 2009 22:43:17 -0700 (PDT)
On May 30, 12:22 pm, paul c <toledobythe..._at_oohay.ac> wrote:
> David BL wrote:
> > 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?
> As i said, I'm not interested in conversation. I'm here only to learn
> from people who sometimes have aperceived more than I have and in return
> try to maybe once in a while provoke them into re-assessing the precepts
> they're hip to I'm not the one to answer any old question that occurs
> to any and every poster who pops up here.