Re: Codd provided appropriate mathematics ... (was Re: Relational and MV (response to "foundations of relational theory"))

Sure there is. He did not call it 1NF then, only normal form saying: "
1.4. Normal Form
A relation whose domains are all simple can be represented in storage by a two-dimensional column-homogeneous array of the kind discussed above. Some more complicated data structure is necessary for a relation with one or more nonsimple domains. For this reason (and others to be cited below) the possibility of eliminating nonsimple domains appears worth investigating. [see note 4] There is, in fact, a very simple elimination procedure, which we shall call normalization.
"Alfredo Novoa" <alfredo_at_ncs.es> wrote in message news:404092c3.4176144_at_news.wanadoo.es...
> On Fri, 27 Feb 2004 07:31:45 -0800, "Tom Hester" <$$tom_at_metadata.com>
> wrote:
>
> >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.
>
> There is no definition of 1NF in that paper.
>
> Regards
> Alfredo
Received on Mon Mar 01 2004 - 18:00:48 CET