目前,传统的GIS将属性与空间数据分离开来的组织模型已经不能满足GIS数据管理的需要,而面向对象的数据库(OODB)组织模型又未成熟.因此,该文研究了将空间与属性数据统一存放在关系数据库中进行管理的技术,建立了用于WebGIS的地理关系数据库模型,并在WebGIS中得到了原型实现.

The requirement of GISs' data management demands a universal organization model instead of the conventional spatial and attribute departed data management model. The OODB organization technique is far from mature. Under this condition, a research on how to manage the attribute and spatial data in a universal way in theRDB was conducted. The organization of the spatial database is illustrated in four parts: the total database level table used to maintain the whole spatial data; the atlas table used to maintain the layers' information in a project; the map table used to maintain the layer information; the spatial index table used to store the spatial index information among a layer. The storage process of spatial data is illustrated through spatial data storage and spatial data calculation. A Geographical Relational Database Model was constructed and implemented in WebGIS.