The design of space-database went through concept design, logical design and physical design. This process gave prominence to designing the road and data structure of accidents information.
空间数据库的建立经历了概念设计、逻辑设计、物理设计过程，主要突出了道路、事故信息的数据结构设计。
Based on the collection of road information, the road network database is constructed by means of GIS technology.
在此基础上采集大量道路信息，溶入GIS技术，建立城市道路网络数据库。
Based on the collection of road information, the road network database is constructed by means of GIS technology.
在此基础上采集大量道路信息，溶入GIS技术，建立城市道路网络数据库。
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