Re: A pk is *both* a physical and a logical object.

On 14 juil, 00:31, paul c <toledobythe..._at_oohay.ac> wrote:
> Jan Hidders wrote:
> > On 13 jul, 17:22, paul c <toledobythe..._at_oohay.ac> wrote:
>
> >>[...] To be fair, I should
> >>say that what little I understand of Bertrand Russell's writing suggests
> >>that he might have approved of separating entities from concepts in a
> >>logical machine, I recall he liked to separate "real things" from
> >>"class-concepts".
>
> > As far as I know he flipped a few times between being a realist and a
> > nomalist. Of course the distinction between abstract and concrete
> > entities is completely independent of the distinction between physical
> > and logical entities, so I'm not really sure why you would bring that
> > up at this point.
>
> > -- Jan Hidders
>
> David C opened the door when he mentioned something like "problems that
> drive sql practioners to emphasize keys" or somesuch. Besides, I
> thought the thread was stuck in a rut.
>
> p

Agreed. Received on Sun Jul 15 2007 - 14:45:02 CEST