基于Oracle Spatial道路线状要素增量信息更新方法研究

The research of the road-linear feature incremental updated based on Oracle Spatial

本文通过分析地籍时空数据模型,初步得出线状时空数据模型及其相应事件,根据操作线状空间数据动作,分别建立了空间事件和属性事件,根据这两种事件操作的特性把要素单元分为了空间单元和属性单元,再根据要素的时间维,把空间单元和属性单元分别存储到历史表和现势表中。最后本文应用Oracle Spatial对该要素时空数据模型进行了组织和设计,并给出相应的查询时空数据的SQL语句。

This paper primary summarizes the road-Xinear data models and its events. After analyzing the eadastral spatiotemporal database, it establishes the spatial events and attributes events based on the liner-spatiotemporal data actions. Also the spatial part and the attribute part are stored in the history and current tables according to the feature＇s time dimension. At the end, this paper organizes and designs the road-linear featuret model based on Oracle Spatial, and gives some Query SQL sentences.