The Research Of Distributed Spacial Data Model Based Metadata And The Application At WebGIS

Today, Web GIS is the peak of the GIS domain, which incarnate distributed computation and frame-based COM. This is the new trend. This paper does much researching work at theory and practice.Firstly, investigates the available data models. Then introduces the Metadata which could organize the spacial data that is distributed geographic and uniform logical. And then put forward a distributed data model based Metadata. Secondly, analyses and validates two Application Models. Thirdly, in order to extend the transmitting means embeds a Short Message platform in a WebGIS platform. Finally, On the basis of the above work I realize a Web GIS named Digital Olympic Village Information System, by which the above work is proved right.This paper has two innovations. They are a simple spacial data model and a new service named Geographical Short Message Service. The two ones have been proved feasible.Jian GuangLin(Computer Science and Technology) Directed by prof. Wang Ying...