[postgis-users] Topology and Triggers

[George Silva]

Hello all again,

I´m curious. I´ve said in qgis list and some other 'desktop' GIS software
lists that the biggest feature missing for OSGIS is something like the
'auto-complete' polygon in ArcGIS,, that would make life much easier.

I´ve been reading some things, and i´ve seem people mentioning trigger based
topology (eg cut out the overlaping area of digitized polygons, or,maintain
only the overlaping areas of the digitized polygons, and other related
issues).

I imagine that would be a trigger using something like after insert update
the_geom.

Can you guys with more experience give me a example, so i can build my own?
Best pratices? Some light around this subject?

Thanks again
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