Design of GML Query Language in Spatial Overlay Techniques

Abstract

As interoperability dose not exists in different geographical databases designed by special programs and applications so data sharing is difficult to use in multiple environment. In this paper we describes the availability of interoperability to arrange the geographical database by using an approach i.e. GML (Geographical markup Language) and the paper describes the polygon overlay which is a geometric operation on two sets of polygon such as union, intersection, difference etc. GML is powerful language and can be utilize for storage, exchange and modeling of geo spatial data .