Research on GML storage based on PostgreSQL database

GML(Geography Markup Language) is the geography information encoding standard, which is based on XML.This paper puts forward a storage approach of GML data based on PostgreSQL.A mapping from GML to database in terms of the geometry and attributes of GML data is conducted.GML is stored into four tables, which is metadata table, layer information table, feature table and index table.With XMLSpy and MapForce, GML data is stored effectively.