As the application of information technology enlarges its scope in the fields of land and mineral resources, the theory, technology and practice of spatial database concept become very complete.
随着信息技术在国土资源部门的广泛应用，空间数据库理论、技术和实践日臻成熟。
This library permits the extension of database concept to a plethora of electronic data, such as graphic information.
这个库允许将数据库概念扩展到很多电子数据，例如图形信息。
The general module of the office information system, the data flow diagram and the database concept mode are also introduced.
然后介绍了办公信息系统的总体模块、数据流图及数据库概念模式。
It gives a suite of modeling concepts which can completely describe the business objects. And the data structures are presented. Therefore, a uniform database concept design framework is achieved.
该方法给出一套能对实际业务对象进行完整描述的概念模型，并给出相应的数据结构设计，从而得到一种统一的数据库概念模型设计框架。
It gives a suite of modeling concepts which can completely describe the business objects. And the data structures are presented. Therefore, a uniform database concept design framework is achieved.
该方法给出一套能对实际业务对象进行完整描述的概念模型，并给出相应的数据结构设计，从而得到一种统一的数据库概念模型设计框架。
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