geographical database

Model of Geographical Database Based on Relationship Database

基于关系数据库的地理数据库模型

This paper provides a general model of a large seamless geographical database.

提供了大型地理数据库无缝组织的实例。

Topologic Relationships and Editing of Elementary Graphic Objects in Object-oriented Geographical Database

地图数据库中基本图形对象的拓扑关系及其编辑

The GeoNames geographical database is available for download free of charge under a creative commons attribution license.

GeoNames地理信息数据库可在知识共享归属许可下免费下载。

The article describes in details the processes of setting up the intranet structure of basic geographical database under the C/ S Model in Qinghai Geological Survey Institute.

以青海地调院局域网建设实例为基础，详细阐述了C/S模式下青海省基础地学数据库网络框架建设的实现途径。

This research applied 1:250,000 national geographical database as a major information source and GIS as a basic methodology to investigate the spatial distribution pattern of the rural settlements of Yulin area in North Shaanxi.

本研究以地理信息系统为基本技术手段，以国家1：25万基础地理数据库等数字信息为主要信息源，对陕北榆林地区乡村聚落的空间分布规律与区位特征进行了探讨。

An example is given to demonstrate how to use the datasets in the Geographical database to perform a LUCC study.

通过实例展示如何用空间数据库中的数据进行土地利用／覆被变化研究。