Re: teaching relational basics to people, questions

From: Bob Badour <>
Date: Sat, 21 Nov 2009 12:56:40 -0400
Message-ID: <4b081bcd$0$5354$>

Roy Hann wrote:

> Sampo Syreeni wrote:

>>[snip] And since
>>one would have to have a bona fide range datatype, building in
>>handling for infinite ranges would also be easy; that'd get rid of one
>>of the most persistent reasons why people incorporate nulls into

> I think you are being excessively optimistic. The most persistent (and
> most common) reason people incorporate nullable columns into designs is
> because they have a misplaced desire to minimize the number of tables in
> the design, and think that conflating multiple fact types in one table
> is clever, efficient, and harmless.

Very well put! Received on Sat Nov 21 2009 - 17:56:40 CET

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