[postgis-users] neeed help in postgis

[Beekk Meess]

hello, 
and when i add an edge for example, all  topology relations are changing by adding an edge. i want to adding an edge and controlling the changint of topology. i mean i want to make more then one network edges or faces topology in the same topologic schema. in reality for example if i have a bridge above an road. edges representing way in the under level make a topology and edges connecting with the bridge making other network topology but all these edges in the same table. i'm sorry for my bad english again.