利用关系型数据库来管理空间数据是当前GIS研究的热点和前沿领域之一.该文提出了一种空间数据库引擎数据结构模型,分析了数据模型体系结构、数据组织以及空间图形要素表达,进而根据该结构模型,实现了在SQL Server关系型数据库中对空间图形数据进行存储、拓扑运算和拓扑分析的操作.通过在土地产权产籍系统中的实际应用表明,基于该模型开发的空间数据库引擎Spatial Database Guide(SDG)运行稳定,性能良好,易于开发,适用面广

The technology of management for spatial data in RDBMS is currently one of the research focus. In GIS integrated environment, the embedded database engine of spatial database and attribute database is encapsulated entirely by GIS platform and its efficiency is quite high. But it is difficult for spatial database engine (SDE) to operate mass database and manage application system of GIS with client (browser)/server structure. Although the functions of commercial enterprise RDBMS are very perfect, it do not still meet special demands of GIS, that is, it must be able to process spatial data (maps) in database. The spatial database engine (SDE) makes the RDBMS to be able to manage the spatial data and build relationships with attribute data. In this paper, a data structure model of spatial data engine (SDE) is presented. The paper analyses the system structure of the data model, the data organization and the expression of spatial graphical features. According to the given data structure model, we realize the operation of storage, topologic arithmetic and topologic analysis for spatial graphical data in RDBMS based on SQL Server. The application in land registration system shows that Spatial Database Guide (SDG) based on given data structure model runs reliably and well which cab be used widely in development of GIS.