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。
The main research fields are computer network, database system and application, parallel processing, multi-media technology, computer graphics and its application.
主要研究方向：计算机网络、数据库系统与应用、并行处理、多媒体计算机技术、计算机图形学及其应用。
The main research fields are computer network, database system and application, parallel processing, multi-media technology, computer graphics and its application.
主要研究方向：计算机网络、数据库系统与应用、并行处理、多媒体计算机技术、计算机图形学及其应用。
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