Re: Lucid statement of the MV vs RM position?

From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Thu, 04 May 2006 15:28:43 GMT
Message-ID: <L4p6g.3166$A26.82549@ursa-nb00s0.nbnet.nb.ca>

Marshall Spight wrote:

> Jon Heggland wrote:
>

>>GUNF intuitively seems very simple to me; like most NFs, it's just
>>formalised common sense. Consider an example of the relvar keys relvar (1):
>>[...]
>>(3) is different from (1), hence (1) is in GUNF, and the use of an RVA
>>is justified. (Actually, Darwen's GUNF formulation is slightly
>>different, but I believe my example captures its intent. The point is (I
>>think) that there does not exist any relation of type (2) that when
>>grouped produces (1).)

>
> I have no idea what GUNF is, and it's not clear from context. Further,
> a Google search for "gunf" or "gunf darwen" produced no useful
> information.
>
> What am I missing? Anyone have any further pointers to useful reading?

It's just a guess, but I figured it stood for "Group/Ungroup" normal form. Received on Thu May 04 2006 - 10:28:43 CDT