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Home -> Community -> Usenet -> comp.databases.theory -> Re: DB required to list multiple D.I.V.O.R.C.E.S. & Re-marriages
> Don't you just love NULLs
I remember the "Much Ado about nothing" thread in this NG, a while back.
In a fully normalized database, there is no need for NULLS. Every NULL can be construed as the consequence of an outer join between more elementary tables.
I contend that a mathematical RELATION has no nulls. If you accept that, if follows that NULLS are a divergence between Relational algebra and the relational model of data. Ducking!
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Regards,
David Cressey
www.dcressey.com
Received on Fri Dec 21 2001 - 07:25:53 CST
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