Design and Establishment of UML Based Object Oriented Geological Database;

System analysis in building geological database;

An approach to the development of a geological database and its mangement system was presented, including the methology for design, implementation, and input data manipulation of the geological system.

The terrain database of a missile position was created.

Important parts including the structure of awareness alerting module in EGPWS, the terrain database design and alerting algorithm were researched.

The paper puts forward a method of establishing geographical factor database with the technique of space analysis and statistical analysis,and according to topographic database and DEM database at the scale of 1:250,000,established the geographical factor database of LanCang River Basin including river,inhabitant sites,road and elevation elements.

This paper briefly introduced the national basic scale topographic map and the basic idea and working process of 1: 50 000 national topographic database updating plan.

Taking two versions of the topographic database with scale 1∶250 000 in China as an example,the questions were studied on data modeling and its description.

Several issues in the design of the geological data warehouse system are proposed and dealt with in this paper: the operation data storage as the interface between database and data warehouse, the geqraphic information system berrowed to store and express spatial data, the cascade updating, the expression of the complex relationship between subjects, and the special data extraction model.

This paper presents several features of the geological data warehouse.