The Research Of Grid Spatial Database Simulation

In order to solve the problem of collaboration and resource sharing of spatial database, this paper combines with the collaboration and resource sharing idea of grid computing, based on the analysis of Five Layer Sandglass Architecture and the traits of spatial database. This paper discuss the work flow of grid spatial database, present the simple topological structure of grid spatial database and construct three layer architecture of it. Then combined the grid spatial database architecture ,build a simulation module of grid spatial database .with the computer simulation technique we systemically study the scheduling algorithms and replicas algorithms under the environment of grid spatial database .at last, we combined all the scheduling algorithms and replicas algorithms and carry through systemic simulation experiments. The experiment results indicate that with reasonably schedule work sites and optimize the deployment of replicas, the performance of spatial data process elements and storage usage are greatly improved, it also greatly save network usage. The problem of collaboration and resource sharing of spatial database has been better solved.