Reasearch On Construction Of Land Use Spatial Database Based On Geodatabase

The construction of Informationization is a force to accelerate the information technology development, and a significant way to scientifically manage land resource too. According to eleventh five-year-plan of land resource Informationalization and outline of cadastre, we will complete a series of database construction in order to support the land resource management and serve for public and also intend to establish urban and rural united database, which cover four levels (nation, province, city, country) and can communicate with each other.The storage and management of spatial data are the foundation of the building of land use spatial database. For sharing and transmitting information efficiently, data model should be taken into account. Spatial data model experienced three generations: the CAD model, the Coverage model, as well as the third model of Geodatabase which was entirely based on object-Relational Database Management System. The Geodatabase model make the seamless integration of spatial data and attribute data come true and it represents the developing direction of Geography Information System.In this study, the Geodatabase data model was applied to the construction of Qianjiang land use spatial database. First of all, on the research and discussion of spatial database and the peculiar characteristic of Qianjiang land use management, the author has proposed to set up the thought of the land use spatial database with the Geodatabase model of object-oriented. CASE tools are used to create storage and management of land use model. In the thesis, using Geodatabase data model of ESRI and object-relation database management system integrates vector data,attribute data,raster data and original recording data together into the land use spatial database. The result of this thesis includes:(1) This study has designed and built Qianjiang Land Use spatial database based on Geodatabase with CASE tools.(2) Reference to international and domestic standard of metadata, the Qianjiang land use database metadata content was instituted.(3) Depend on ArcObjects library, ArcSDE, Oracle9i, making use of VB and COM technology, this study has developed Qianjiang land use database system.