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Re: database design method

From: D Guntermann <guntermann_at_hotmail.com>
Date: Wed, 13 Nov 2002 21:15:35 GMT
Message-ID: <H5J9py.Iwv@news.boeing.com>

"Paul Vernon" <paul.vernon_at_ukk.ibmm.comm> wrote in message news:aqquk9$g8m$1_at_sp15at20.hursley.ibm.com...
> "Jan Hidders" <hidders_at_REMOVE.THIS.uia.ua.ac.be> wrote in message
> news:3dd0dce6$1_at_news.uia.ac.be...
> > >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
models.
>
> Agreed. This is Date saying about the same thing (I think)
>
> Encapsulation Is a Red Herring
> C.J.Date
> http://www.dbpd.com/vault/9809date.html
>
> Regards
> Paul Vernon
> Business Intelligence, IBM Global Services
>
>

Paul,

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.

Regards,

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

Original text of this message

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