saving vectors in PostGis

Question

I need to save my vectors layer back to postgis, which if i read correctly i can do using geoserver however im confused. All the examples ask you to import a shapefile. I dont have a shapefile. This will be a empty vector layer ontop of a couple of base layers which the user will add polys, points etc etc. How do i create the tables to hold the vector data. Also how do i know the structure of the tables. e.g columns, column names, primary / foreign key, relationships etc etc

Thanks in advance

Answer 1

You can add empty tables to PostGIS in Geoserver:

Before this view can be served by GeoServer, the following step is necessary to manually create the geometry_columns entry:

INSERT INTO geometry_columns VALUES ('','public','my_view','my_geom', 2, 4326, 'POINT' );

http://docs.geoserver.org/latest/en/user/data/postgis.html