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Article #667

Re: General Design/Normalization question

#667
From: mpowell
Date: Mon, 16 Apr 2001 14:02
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I don't know of any off hand. The general rule we've adhered to is a balance
between usability and normalization. IOW, if you find yourself doing a lot
of JOIN's to resolve data references then it may be time to consider
consolidating some tables. Also, we try to keep our primary keys to a
minimum so as to avoid unnecessarily indexing tables just prior to queries
(simple and complex). For the most part, our primary keys are a single value
(DOUBLE PRECISION or INTEGER) and we feed GEN_ID() to them (starting from
the very bottom end, -2147483648 or something like that, generators default
to 0, but since GEN_ID uses an integer we find this works just fine).


"Christopher Smith" <smitty1each@earthlink.net> wrote in message
news:3ada280f_2@dnews...
> Recent discussions in school have argued against higher levels of
> normalization as being too detrimental to performance.  I've never worked
> much beyond stand-alone applications.  Are there books/case
studies/articles
> that anyone knows of pertaining to performance tradeoffs for normalization
> when doing database design?
> Regards,
> Chris
>
>
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From: "mpowell" <mike.powell@transcore.com>
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Subject: Re: General Design/Normalization question
Date: Mon, 16 Apr 2001 08:02:42 -0600
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