A Jigsaw query processing technique for Web GIS

As computing environments for the Internet have been expanding, research on Internet GIS has developed. The omnipresence and easiness of the Web focuses the research on Web GIS. Web GIS is classified into a server-side Web GIS and client-side Web GIS. The former can easily be implemented but raises the overload of the server, the latter lessens the overload of the server, but raises some problems. To solve these problems, this paper proposes a Jigsaw query processing technique that processes user queries dynamically. For an evaluation, the detailed experiments such as map browsing, layer control, point query and region query are conducted comparing the proposed technique with the two other methods. Based on the results of experiments, the proposed technique can give the user a fast response and increase system performance