Re: Codd provided appropriate mathematics ... (was Re: Relational and MV (response to "foundations of relational theory"))
From: Tom Hester <$$tom_at_metadata.com>
Date: Fri, 27 Feb 2004 07:31:45 -0800
Message-ID: <2d1f0$403f62e2$45033832$25826_at_msgid.meganewsservers.com>
Date: Fri, 27 Feb 2004 07:31:45 -0800
Message-ID: <2d1f0$403f62e2$45033832$25826_at_msgid.meganewsservers.com>
Oh yes he did. See: A Relational Model for Large Shared Data Banks,
Communications of the ACM, Vol 13, No. 6, June 1970, pp. 377-387.
"Alfredo Novoa" <alfredo_at_ncs.es> wrote in message
news:403f21dc.547787_at_news.wanadoo.es...
> On Thu, 26 Feb 2004 10:58:40 -0800, "Tom Hester" <$$tom_at_metadata.com>
> wrote:
>
> >Codd defines first normal form in terms of simple
> >domains.
>
> False.
>
> > That is the interpretation of a single element in a domain can
> >only be an atomic element of a set. It cannot be further decomposed.
>
> Atomic was not a fortunate term. See the lastest editions of
> "Introduction to Database Systems" for a clarification.
>
>
> Regards
> Alfredo
Received on Fri Feb 27 2004 - 16:31:45 CET