[GRASS-user] Modelling 1:n and m:n relationships in GIS
markus.metz.giswork at googlemail.com
Tue Mar 10 10:13:44 EDT 2009
Moritz Lennert wrote:
> On 10/03/09 12:57, Markus Metz wrote:
>> I have updated the vectorintro (vector/vectorintro.html) in grass64,
>> grass65 and grass7. "Attribute management" has been changed to
>> "Vector object categories and attribute management".
>> Please check for and report any errors/inconsistencies or if the
>> changed description is incomprehensible.
> I just slightly corrected it (r36308+r36309). I don't have a copy of
> grass64 on my machine at the moment. Could someone merge this into 64
> for me ?
Done. And explained a bit more clearly in the part on layers. I
emphasized that a category number must be defined for a given layer if a
vector object should link to the attribute table used for that layer.
> Main point: "In order to link one vector object to several attribute
> tables, several category numbers per vector object are needed."
> This is a bit misleading, so I erased it. Actually you need different
> layers, and thus category numbers in different layers. As this is
> explained in the part on layers, I decided to erase this sentence.
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