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From: dberg@informix.com (David I. Berg)
Newsgroups: comp.databases
Subject: Re: Relational Databases
Message-ID: <1991Jun10.153427.29661@informix.com>
Date: 10 Jun 91 15:34:27 GMT
References: <1991Jun07.063749.7904@chinet.chi.il.us> <1991Jun08.124337.29813@uvmark.uucp> <7Q--HLB@cs.widener.edu>
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In article <7Q--HLB@cs.widener.edu> larry@cs.widener.edu (Larry Sigmond) writes:
>In article <1991Jun08.124337.29813@uvmark.uucp> jim@uvmark.uucp (Jim Todhunter) writes:
>>
>>This is a very active area of investigation because there are serious
>>deficiencies in the first normal form model.  
>
>I'd be interested to hear an example of a deficiency caused by First 
>Normal Form or a reference to the research.

Read S.P.Ghosh's article on Statistical Relationl Databases in "Knowledge
and Data Engineering"; 3,1; 3/91; pp 55-64.
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{uunet|pyramid}!infmx!dberg       The opinions expressed herein are mine alone.