Supermap环境下空间数据库的设计与实现

Spatial database design and realization under supermap environment

根据空间数据库的技术特色和设计原则,对基于GIS公路路线决策支持系统进行了空间数据库设计:数据库采用关系型的数据模型,使用Supermap Objects提供的SDB数据引擎进行数据库的构建与管理;数据来源于现有的地形图,为此建立专有的数据转换模块,将DXF地形图文件转换成Supermap Objects中的数据集;为完善属性数据库,提供人机交互窗口,修改属性表结构,编辑空间要素对象的属性值,为用户提供灵活、便捷的修改、编辑属性数据库的功能,成功地进行了空间数据库的构建与管理,为后续的路线决策提供数据支持。

According to the technical features and designing principles of spatial database, to design the spatial database with the system of GIS highway mute decision - supporting. Database adapts relational data model, and use Supermap Objects providing SDB Data- engine to construct and manage the database. The data is from existing terrain map, for which a special data transferring mode is set up, and to transfer DXF terrain map files to Dataset in Supermap Objects. In order to perfect attribute database, to provide human - computer interactive interface, to mend attribute chart structure, to edit attribute figure of the spatial element object, to provide a quick and convenient iunction of correction and editing attribute database for users, the construction and management of spatial database are carried out successfully, which provides the data support for the following routs decision- making.