Grid Environment Gml Spatial Data Storage And Query Key Technology Research

The rapid development of cartography and geographic information industry to promote the generation of geospatial data,due to the GIS software support geospatial data are different, which can lead to various GIS software, geospatial data format between the existence of certain incompatibilities, geography markup Language GML emerge as the times require. Because of good data format,GML gradually become the GIS industry integration of spatial data, sharing and exchange of the basic format. GML spatial data is stored in the form of the GML encoding of spatial data, the visual GML to the graph way more intuitive displayed to become an inevitable trend,. In this paper, the open source js framework OpenLayer is used to make GML visable and make it show in the browser in the form of graph.Grid computing environment can be seen as a virtual container of integrating heterogeneous resources. The present grid system developed based on Globus grid service platform, the use of the Globus Toolkit Grid system development, the Globus grid service platform can build a complex grid system. By the use of OGSA-DAI grid computing platform, heterogeneous data sources can be stored and queried. Spatial data stores space data in the form of index in this paper. R+tree index mechanism is used to Principle Analysis of Storage of GML Data Analysis in grid environment,That includes storage granularity and GML object-oriented storage model,and that operate the relationship between the child and the type of space data in the use of GML space. K-Nearest Neighbor query algorithm is used to Principle Analysis of query of GML Data Analysis in grid environment.. First in the stand-alone environment, using SQL Server and MySQL XML data storage, query operation.And that can set up grid computing platform for Globus and can make OGSA-DAI deployed into a Globus container,so that it can do verify the analysis of the store operation and the query operation to XML by use of relational database. MySQL and XML database Xindice separately in Grid Computing Environment.