The second part discussed the theoretical knowledge and data models of DGNDBS; studied the feature, work model and main technique of the network database system.
第二部分从理论上讨论了动力大地测量网络数据库系统的基础知识和数据模型，研究了网络数据库系统的特点、工作模式以及主要技术。
After the establishment of distribution network GIS data model and equipment coding, data model, organizing format and database structure of the integration system are proposed respectively.
建立了配网GIS的数据模型和电气设备的编码方式，提出了该集成系统的数据模型及组织形式，设计出其集成数据库结构。
According to low efficiency in network database accessing in unreliable military communication system, this paper proposes the database access model based on distributed component.
针对不可靠军事通信应用系统中网络数据库访问效率低的问题，提出一种基于分布式组件的数据库访问模型。
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