Re: database design method

From: D Guntermann <>
Date: Wed, 13 Nov 2002 21:15:35 GMT
Message-ID: <>

"Paul Vernon" <paul.vernon_at_ukk.ibmm.comm> wrote in message news:aqquk9$g8m$
> "Jan Hidders" <> wrote in message
> news:3dd0dce6$
> > >Could there be such a thing as "conceptual encapsulation"?
> >
> > Exactly! My compliments. You are asking the right questions. I would say
> > that term encapsulation in a logical conceptual data model is a
> > contradiction in terms. This is actually one of the best and deepest
> > arguments I know against the use of OO data models as logical data
> Agreed. This is Date saying about the same thing (I think)
> Encapsulation Is a Red Herring
> C.J.Date
> Regards
> Paul Vernon
> Business Intelligence, IBM Global Services

Thanks for the reference.

Date has mentioned/hinted/eluded to a new revised definition for 1NF that I assume takes into account his acceptance of nested relations as attribute values. Any pointers to a definitive reference in this regard? I don't have TTM, unfortuntately.


Daniel Guntermann Received on Wed Nov 13 2002 - 22:15:35 CET

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