Path: utzoo!utgpu!watmath!clyde!att!ihnet!beyer From: beyer@ihnet.ATT.COM (Dave Beyerl) Newsgroups: comp.databases Subject: Re: E.F. Codd and the Relational Model Summary: Codd's 12 rules in Computerworld article titled: "Is your DBMS really relational?" Message-ID: <666@ihnet.ATT.COM> Date: 21 Nov 88 12:05:23 GMT References: <15212@iuvax.cs.indiana.edu> Organization: AT&T Bell Laboratories - Naperville, Illinois Lines: 13 In article <15212@iuvax.cs.indiana.edu>, bkliewer@iuvax.cs.indiana.edu (Bradley Dyck Kliewer) writes: > > Also, I've seen a very short description of Codd's 12 rules, but there > are a couple which I'm not quite clear on. The article references > Computer World, but gives no issue data. Can anybody give me an issue #, The Computerworld article in which Codd presented his 12 rules is titled "Is your DBMS really relational?" and was published in two parts. The first appeared in a supplement to the October 14, 1985 issue, pages ID/1-ID/9 and the second appeared in the October 21, 1985 issue, pages 49-60. Dave Beyerl ihnet!beyer