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  3. September 2005

RE: NULL's on the Iseries

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.

Joe

> From: 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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