Re: Peter Chen and Charles Bachman
From: Dawn M. Wolthuis <dwolt_at_tincat-group.com>
Date: Tue, 4 May 2004 17:16:28 -0500
Message-ID: <c794o4$24r$1_at_news.netins.net>
Date: Tue, 4 May 2004 17:16:28 -0500
Message-ID: <c794o4$24r$1_at_news.netins.net>
"Leandro Guimarăes Faria Corsetti Dutra" <leandro_at_dutra.fastmail.fm> wrote
in message news:pan.2004.05.04.18.24.17.225387_at_dutra.fastmail.fm...
> Em Tue, 04 May 2004 12:41:18 -0400, Laconic2 escreveu:
>
> > Hey Dawn, if you really want to find out whether the term "hierarchical
> > data model" was coined by its opponents, Bachman is the trail to
follow.
> > His "Data Structure Diagrams" precede Ed Codd's 1970 article.
>
> Diagrams aren't models...
I'll accept that diagrams, in themselves, are not full mathematical theories, but models they often are, it seems to me. What is your definition of "model" (as a noun)? Received on Wed May 05 2004 - 00:16:28 CEST