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________________________________________________________________________________________________ Joe Pluta wrote:
The original relational model never included a NULL, and some of the great minds of relational database design repudiate the idea. http://www.dbdebunk.com/page/page/2296478.htm I highly recommend following the link to "How to Handle Missing Information Without Nulls", a pretty self-explanatory title, written by Hugh Darwen himself. When it comes to relational database theory, it doesn't get a lot more authoritative than Darwen and Date. JoeFrom: Raul A. Jager W. There is a branch of mathematics that deals with "sets". Relational databases are based in sets and folow the rules of this branch of mathematics.
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