Study Of Technical Analysis And Optimization Method On Mainstream SDE

The study on Spatial database engine(SDE) which is a new technic mangining and organizing spatial data is hot in the field of GIS.But there are some problems to manipulate massive spatial data rapidly,expediently and effectively.1) It is short of data in representing the efficiency of SDE manipulating the massive spatial data.2) SDE are not good at integration of multisource spatial data.3) SDE is so complex that users and programmers couldn't be easy to keep the system running in the high point.Firstly,the paper try some experiments on testing the efficiency of SDE manipulating the massive spatial data,and analysis the result of experiments.Then,the paper design some modules and strategies that are named Method for Manipulating Spatial Data based on the experiments.The following two apects are chief points of Method for Manipulating Spatial Data.1.Design the method for integration of multisource spatial data.The main body of the method is a interface which rnanipulating the multisource massive spatial data in different databases.The interface adopt the technique of Seamless Integration of Multisource Spatialdata(SIMS) based on bridge pattern.The interface encapsulates the Multisource Spatialdata with object_oriented fashion and give the data to users in uniform format.2.Design the method for adjusting and optimizing the spatial database management system.The method contains two aspects.One is adjusting and optimizing the database management system and SDE to keep the system running in the high point.Another is designing a mechanism for filtrating the massive spatial data which improve the speed of loading spatialdata.Our research represents that Method for Manipulating Spatial Data is good at constructing large land use information system and helpful to the users and programmers.