Re: Attribution for modeling data with relations

"dawn" <dawnwolthuis_at_gmail.com> wrote in message news:1141271292.728377.41660_at_e56g2000cwe.googlegroups.com...
> David Cressey wrote:
> > "dawn" <dawnwolthuis_at_gmail.com> wrote in message
> > news:1141232675.124053.15680_at_j33g2000cwa.googlegroups.com...
> >
> > > Does anyone know to whom should we attribute the modeling of data with
> > > relations?
> >
> > I had mentioned a year or more ago that some people had used relational
math
> > as a basis for "inference engines" before Codd's 1970 paper (and before
the
> > 1969 paper that I previously didn't know about, also).
>
> I recalled that someone had mentioned something about it. Is the 1969
> paper internal to IBM? Do you have a URL?

I only saw a reference to the 1969 paper somewhere on-line last week. AFAIK, the 1969 paper was not made available to the public.

>
> > Just starting with the footnotes in Codd's paper, and doing a little
> > searching led me pretty quickly to this:
> >
> > www.rand.org/pubs/research_memoranda/RM5947
> >
> > I think this work, from 1967, predates Codd's vision of the RDM. What
is
> > new with codd is the application of the RDM to large shared data banks.
>
> And normalization.

Normalization was a minor topic of the 1970 paper, IMO. Received on Fri Mar 03 2006 - 21:35:06 CET