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From: sundin@chalmers.UUCP
Newsgroups: comp.databases
Subject: Re: Ted Codd's Golden Principles
Message-ID: <1354@chalmers.UUCP>
Date: Fri, 27-Mar-87 06:18:46 EST
Article-I.D.: chalmers.1354
Posted: Fri Mar 27 06:18:46 1987
Date-Received: Sat, 28-Mar-87 17:18:00 EST
References: <797@idec.stc.co.uk>
Reply-To: sundin@chalmers.UUCP (Ulf Sundin)
Organization: Dept. of CS, Chalmers, Sweden
Lines: 7

I think that the article(s) you are looking for are:

E.F.Codd: Is your DBMS really relational?, 
in "Computerworld", No ?, October 14, 1985

E.F.Codd: Does Your DBMS run by the rules?
in "Computerworld", No. ? October 21, 1985