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Re: 3vl 2vl and NULL

From: Gene Wirchenko <genew_at_ucantrade.com.NOTHERE>
Date: Fri, 17 Feb 2006 14:42:22 -0800
Message-ID: <g0kcv1p2206o5lhsm8qpdka99pjb4hd32s@4ax.com>


On 17 Feb 2006 14:21:47 -0800, "dawn" <dawnwolthuis_at_gmail.com> wrote:

[snip]

>Although Date now defines 1NF differently, I think he has been
>consistent in defining "normalization" to be equivalent to 1NF. p149

     Reading for comprehension would help!

     For example, there is this
(<http://www.dbdebunk.com/page/page/622124.htm>): Chris Date Responds: Normal forms--Classical normalization theory admits of no level of normalization higher than fifth. Fifth is final, for reasons explained in AN INTRODUCTION TO DATABASE SYSTEMS."

[snip]

Sincerely,

Gene Wirchenko Received on Fri Feb 17 2006 - 16:42:22 CST

Original text of this message

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