# evolution of relational database

Date: Tue, 21 Nov 2000 03:47:34 GMT

Message-ID: <qfmS5.1735$XX6.355620_at_typhoon.southeast.rr.com>

Hello everyone, I'm new to this group (newsgroups for that matter). I've
found this group out of necessity today. While in class today my teacher
brought up the point that relational databases got their name not because of
the relationships between attributes, but because of the mathematical set
theory from which the relational model was derived. So then next logical
question to me seemed to be... "What can you tell us about the mathematical
set theory from which this model came from?" Well, he didn't really know
the answer so he said, "I don't know but since you're interested you can
find out and give the class a presentation when you do." At that point I
had a sinking feeling in my gut. Now I really want to find out about this.
So, can anyone help me to understand the set theory and how it brought about
relational databases?

I've been reading on www.mathpages.com but I'm not having a lot of luck in
seeing how the set theory applies to relational databases.

I also read

A Relational Model of Data for Large Shared Data Banks
by E. F. Codd which I found at

http://www.cmpe.boun.edu.tr/~rxk00500/codd/toc.html.

Neither of these really seem to have what I'm looking for. The former is probably the most I've found on the set theory and the latter seems to give a very good explanation of the relational model. Yet I'm still trying to connect the two.

Regards,

David D

sspunx_at_hotmail.com
Received on Tue Nov 21 2000 - 04:47:34 CET