数字城市地理实体建库模型探讨

An Exploration of Digital City Geographic Entity Database Construction Model

数字城市建设过程中产生"信息孤岛"的原因在于各职能部门对同一地理实体的认知不同,采用了不同的空间数据格式和数据建模方法。为了解决"信息孤岛"问题,在数据库建模过程中采用大型关系型数据库以支持海量数据的共建共享,尝试用组份拓扑学与地理定位理论从数学层面上探讨数据建模问题。

'Information Island' comes out in digital city because of the different recognition of the same geographic recognition between functional departments which adopt different spatial information format and database modeling methods.In order to solve the problems of 'Information Islands',this paper uses large scale relational database in the process of database modeling to support the sharing and co- building of mass data,and tries to explore the issues of data modeling using mereotopology and geographic positioning theory from the point of view of mathematics.