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Article #667Re: General Design/Normalization question
From: mpowell
Date: Mon, 16 Apr 2001 14:02
Date: Mon, 16 Apr 2001 14:02
24 lines
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2045 bytes
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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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fcd2b,c1944fb92b19189e X-Google-Attributes: gidfcd2b,public X-Google-ArrivalTime: 2001-04-16 07:18:04 PST From: "mpowell" <mike.powell@transcore.com> Newsgroups: borland.public.cppbuilder.database.multi-tier References: <3ada280f_2@dnews> Subject: Re: General Design/Normalization question Date: Mon, 16 Apr 2001 08:02:42 -0600 Lines: 26 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 NNTP-Posting-Host: 198.59.170.194 Message-ID: <3adafcc9$1_2@dnews> X-Trace: dnews 987430089 198.59.170.194 (16 Apr 2001 07:08:09 -0700) Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-03!supernews.com!logbridge.uoregon.edu!dispose.news.demon.net!demon!colt.net!newspeer.clara.net!newspeer2.clara.net!news.clara.net!newsfeed01.sul.t-online.de!t-online.de!dnews