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Re: dbdebunk 'Quote of Week' comment

From: x <x_at_not-exists.org>
Date: Tue, 23 Aug 2005 08:59:56 +0300
Message-ID: <deee0u$spn$1@domitilla.aioe.org> 





The quote does not mention if the key is generated by the DBMS
or by the application.


It only say that it has no meaning for the end user.



This means that there must be a one to one mapping between the generated key
and some key with a meaning for the end user. Therefore that meaningless
primary key is a pointer. But one of the goals of the relational model is to
eliminate pointers from the data model.



Other goal is to give the end user direct access to data.
Received on Tue Aug 23 2005 - 00:59:56 CDT












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