The Research On Dynamic Update In Cadastral Data-base

As the core of land foundation database, the cadastre database directly provides the data for the cadastre supervisory work. Thus it is focused and realistic to explore long-term update mechanism of the cadastre database. The renewal of the cadastre database virtually is pouring fresh flood into the cadastre database unceasingly and keep its life-force in the process of cadastre administration. Its update mechanism should be fast and accurate. The administrate mode should be fine rather than extensive. As the modern social unceasingly develops and the soil changing becomes more and more frequent, the dynamic mechanism in the cadastre information systems database establishing becomes more and more important. The cadastre database change management pattern "three database in one body" is introduced in the dissertation. A small cadastre change information management system is exploitured. The idiographic contents are:(1) The cadastre entity and its connection, tense are discussed in the view of "entity and tense". Besides, the hinge effect of soil enrolling in the cadastre database administration is introduced. These basal but pivotal theories would provide gist for the cadastre information systems database establishing.(2) The cadastre database change management pattern "three database in one body" is introduced. Embarking from the cadastre information's tense construction of data, several kind of space and time databases are analyzed. The cadastre database dynamic updating mechanism should use dynamic multistage ground state revision model and "three database in a body" management pattern. A example is used to describe the basic ideology of the modern.(3) The GIS support which is needed in the cadastre database dynamic updating mechanism establishing is analyzed, including the spatial databases technology, spatial data model, the choice of the develop module and language.(4) Finally, SQLServer is elected as the backstage relations database. The ArcSDE spatial data engine is integrated to expand SQLServer as to manage the cadastre data. GeoDatabase is used as the spatial data model. The cadastre change information management module is developed in ArcObjects and VB.