This paper discusses the architecture, data model and implementation techniques of our mapdatabase management system MDB.
本文讨论我们设计并实现的地图数据库管理系统MDB的体系结构、数据模型、数据类型及其实现技术。
2
On the base of analyzing the character and structure of the point, line, area symbols, a data structure of map symbol base which serves the symbolized output in digital mapping is put forward.
This paper states the geographical map management system of Xishan coal mining area. Xishan coal electricity group company builds the company standard data-base for 2GB digital geographical map.