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

From: Jan Hidders <hidders_at_gmail.com>
Date: 4 Nov 2006 01:27:30 -0800
Message-ID: <1162632449.965998.59080_at_m7g2000cwm.googlegroups.com>


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?

  • Jan Hidders
Received on Sat Nov 04 2006 - 10:27:30 CET

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