Re: Basic question?What 's the key if there 's no FD(Functional Dependencies)?

Jan Hidders wrote:
> NENASHI, Tegiri schreef:
>
> > Jan Hidders wrote:
> > > Do you know of any results that might be interesting for database
> > > theory and could not already be shown with good old set theory?
> >
> > The categorical sketches to use for universal view updatability:
> >
> > Michael Johnson and Robert Rosebrugh.
> > Universal view updatability
>
> That's not a result but a reformulation of the problem in new
> terminology. What does it learn us that we didn't know already from
> work by for example Georg Gottlob or Stephen Hegner?

I fly to Montrel at this moment and will respond later.

Bonne chance ;)

--
Tegi


> 

> -- Jan Hidders