GIS based farming information system approach which used geographicdatabase to analysis farming information was discussed and an instance was showed in detail.
Spatial data model is the core and base of three dimensional geographic information system design.
空间数据模型是地理信息系统设计的核心和基础。
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The paper finish building channel geographic information database, through demand analysis, conceptual design, logic design, physical design, data base model building and a series of step.