[development] Taxonomy: Multiple parents?

sime info at urbits.com
Tue Jul 24 11:56:39 UTC 2007


 From reporting/analysis point of view, salmon IS salmon.
.s

Gerhard Killesreiter wrote:

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>Robert Douglass schrieb:
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>
>>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
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