24 Jul
2007
24 Jul
'07
1:56 p.m.
From reporting/analysis point of view, salmon IS salmon. .s Gerhard Killesreiter wrote:
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Robert Douglass schrieb:
In my opinion, any time multiple parents are used it is a mistake in the data model. For example, if you have regional offices and each office has a sale, customer and advertising contact person, you might be tempted to model the data like this:
How about:
Fish living in:
- - salt water . shark . salmon . eel . cod
- - fresh water . trout . salmon . eel . carp
Cheers, Gerhard -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux)
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