The GIS Realizing Base On Object-relational Spatial Database Theories

Currently, "the middle ware" of GIS technology makes use of the current relational database to manage the data, and GIS adopts it to manage the spatial data, which results in save and management of spatial data and non-spatial data splitted into pieces. The paper proclaims that we shouldnt manage spatial data and non-spatial data of object of GIS separately, but to search a reasonable way to manage, which can save and search and manage the object data in the same database, and can keep system speed and unifying while customers access to huge data. Besides, it shows an afresh object-relational spatial database management system, which defines spatial data types including Point, Simple-line, Poly-line, Polygon Rectangle, Circle, Hpolygon, Shape, etc. and text data of arithmetic figure, word and time as the basic data types of database that offer several spatial calculate way ( directly using of GIS analyses the calculate way to arrive in the database for the purpose of data for better management). Finally, it realizes with the same percolation, searches the optimization calculate way inside the DBMS kernel, and handles the spatial and non-spatial data. The compatibility permits the SQL standard, and expands the function of searching spatial data by SQL.For the advantageous extending of object data model, create Multimedia Framework, and create General Large Object, GLO class and agent class.Mangement of image class and audio class. It is different from using the BLOB management multimedia data of the RDBMS.The spatial MMP filter of adoption, realizes spatial data with non-spatial data to the fast index and analysis of unifying, and there is obvious exaltation on the speed.GIS product for this reason ratio by "the middle ware" management the spatial data, develops on function on and upon, solves the problems of saving data and index completely, reasonably organizes spatial data and non-spatial data, and realizes Chinese 4th generation GIS spatial database technique.Base on RUP model, software engineering management is more advantageous than normal regulations software engineering.