Compared with several other data models used in early and recent GIS, the author gives his own idea of what is a geographical space, and then puts forward a new object-oriented conceptual data model.
本文在分析和总结了早期和近期GIS几种数据模型的优缺点的基础上，对地理空间进行了重新理解，给出了一个面向对象的概念数据模型。
Geographical Information System (GIS) with the functions of spatial analysis and management of space data is promising in mineral resourxce prognosis.
地理信息系统空间数据管理及空间分析功能使其在找矿预测中有着广阔的应用前景。
Space, thematic attribute and time are the three basic characteristics of geographical phenomena or the essential data types of GIS database.
空间、属性、时间是地理现象的三个基本特征或地理信息系统数据库的三种基本数据成分。
Space, thematic attribute and time are the three basic characteristics of geographical phenomena or the essential data types of GIS database.
空间、属性、时间是地理现象的三个基本特征或地理信息系统数据库的三种基本数据成分。
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