Preliminary Research on Measuring the Amount of Information of Topographic Database Based on Entropy

Data Design and Database Building for 1 ∶ 50000 Topographic Database

国家1∶50000地形数据库的数据设计与建库

In author's opinion, conversion from cartographic data to GIS database is essentially data model conversion according to modeling analysis.

本文以模型分析理论为出发点，认为制图数据向GIS数据的转换实质是数据模型的变换。

Web cartographic generalization based on database generalization and SVG

基于数据库综合和SVG的网络制图综合系统研究

And, a novel approach is presented to automatically convert the labels of the annotation layer into the name attributes of the associated spatial objects because there are not the relations between annotations and objects in current cartographic database.

由于当前很多生产单位的城市地图数据库中注记没有与目标关联，因此本文还研究了从图面注记到空间目标名称属性的自动转换方法。

Finally, based on the structured river network which contains these two indices, several retrieval functions are provided as a way to extract structural information during the structure processing in a cartographic database.

根据包含以上两个索引的结构化河网，提供了若干检索函数，作为地图数据库中结构处理时结构信息的提取手段。

Export data from the current database into a text file. This process will overwrite data if exported to an existing file.

将数据从当前数据库导出到文本文件。如果导出到已经存在的文件，该进程将覆盖已有的数据。

The Application of Distributed Relational Database Architecture in AS/ 400 Cluster Environment

分布式关系数据库架构在AS/400集群下的应用

A Network Database Architecture Based on Mobile Agent and XML

基于移动Agent和XML的网络数据库框架

Research of Grid Spatial Database Architecture

网格空间数据库体系结构的探讨

A design scheme for security database architecture

一种安全数据库体系结构的设计

Research on application of fuzzy database to expressway maintaining system

模糊数据库技术在高速公路养护系统中的应用

In this paper fuzzy theory and database system are combined, new data query technique is provided.

将模糊理论与数据库系统相结合，得到一种数据查询新技术。

In addition, this paper discusses the design of fuzzy database management system on vague set.

此外，本文还讨论了基于Vague集的模糊数据库管理系统的设计。

Designing of dynamic fuzzy expert database system

动态模糊专家数据库系统的设计

A Model of Logistics Fuzzy Knowledge Database System Based on Cloud Theory

一种基于云理论的物流模糊知识库系统模型

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。

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。

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。

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。

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