Re: Newbie question about db normalization theory: redundant keys OK?
From: Anith Sen <anith_at_bizdatasolutions.com>
Date: Wed, 19 Dec 2007 15:04:31 -0600
Message-ID: <fkc110$b5k$1_at_aioe.org>
Date: Wed, 19 Dec 2007 15:04:31 -0600
Message-ID: <fkc110$b5k$1_at_aioe.org>
>> I can't imagine saying to database users "Use updates if you mean that
>> this particular individual already existed. Use other operators if you
>> mean something else." I for one wouldn't want to have anything to do with
>> such a DBMS!
I am quite sure Brian had been told about the distinctions between external and internal predicates and how the distinction matters significantly while mapping a business representation to a logical model. For whatever reasons, he chooses not to heed. Fabian has an article somewhere in his site namely, "The desirable and the possible" that clarifies the distinction pretty well.
-- AnithReceived on Wed Dec 19 2007 - 22:04:31 CET