| In the development progress of agriculture information managing,with the increasing quantity of Spatial data and the emerge of manifold and multiscale data,it is important for the performance of system to organize and manage these data well.The rational method of the organization of Spatial data can not only improve the efficiency and performance of the system,but also reduce later maintenance.Therefore,the research on solutions of Spatial database and the organization and management of Spatial data is an important content in current agriculture information managing field,and also is an necessary and significant job.This paper takes the land resource database of HUBEI province as research object.starting with basic concept of Spatial database and the Spatial data model, similarities and differences and advantages and disadvantages of Oracle Spatial data engines are compared and analyzed.According to the characteristics of the land resource data of HUBEI province, Oracle as database platform is final solution.The Spatial database of he land resource data of HUBEI province is contructed through conceptual design,logical design, physical design.And the optimization and maintenance of database are discussed,mainly focuses on backup and restore of database.The budded database has been in realize.Then,this paper begins with the influences of Internet on GIS. It firstly introduces the conception and basic principle of WebGIS. And it focuses some advanced technologies in WebGIS development.It emphasis on introducing the structure of MapXtreme for Java platform.At last,the paper introduces some client programs of land resource which is developed by using JBuilder with the land resource data of HUBEI province based on the platform of MapXtreme for Java. The application uses popular Java technologies such as Servlet,Java Bean and JSP. Using these Java technologies as its core technology and combines the API provided by MapXtreme for Java to issue land resource WebGIS on Internet. |
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