[postgis-users] linked point and polygon tables

[Piotr Pachół]

Hello,
Suppose we have in PostGIS  table with point geometry, ID column and 
some other attributes.
Is it possible to create table with polygon/polyline geometry which is 
linked to table with point geometry ?
I mean such a link where:
- geometry of polygon/polyline is not created by set of coordinates but 
is created by (refering to) set of ID's from point table,
- when some point object (from point geometry table) is removed it 
should automatically influence the shape of polygon/polyline.

Regards,
Piotr