基于Oracle的空间拓扑管理研究

The Research of Spatial Topologically Structured Management Based on Oracle

空间拓扑关系是GIS的一个重要内容。本文提出了基于Oracle的空间拓扑管理模型。首先,将拓扑元素定义成对象,并列出了这些对象所应该具有的最基础的属性。其次,定义一个拓扑元数据表来对拓扑相关的内容进行描述,拓扑元数据表将起到一个管理和信息导航的作用。最后,讨论了基于该模型如何建立拓扑元素索引的问题。

Spatial topology is an important concept. In this paper, a spatial topologically structured management model is described and implemented within Oracle. Firstly, topology features are modeled as objects, which have properties and methods. Secondly, a metadata table is defined to store information related to topology and it also plays a role of topology manager and navigator. Finally, we describe how to create the index for topology features.