Re: WHAT vs HOW vs WHERE
From: Alfredo Novoa <alfredo_at_ncs.es>
Date: Mon, 31 May 2004 16:14:11 GMT
Message-ID: <40bb530b.11095624_at_news-read3.maxwell.syr.edu>
Date: Mon, 31 May 2004 16:14:11 GMT
Message-ID: <40bb530b.11095624_at_news-read3.maxwell.syr.edu>
On Mon, 31 May 2004 18:11:57 +0300, "x" <x-false_at_yahoo.com> wrote:
>> And the logical pointers are bad. One of the major advantages of The
>> Relational Model is that they are droped.
>
>Many use FK as pointers ...
But they are not pointers. It is a bad metaphor.
>There is nothing in the Relational Model to prevent this. (maybe I'm wrong
>?)
It is a good use of integrity constraints.
On the other hand you know that The RM say nothing about the underlying physical pointers.
Regards
Alfredo
Received on Mon May 31 2004 - 18:14:11 CEST