1 Topology Data Model Overview

The Topology Data Model feature of Oracle Spatial lets you work with data about nodes, edges, and faces in a topology.


Topology Data Model is not supported in Oracle Autonomous Database Serverless deployments.

For example, United States Census geographic data is provided in terms of nodes, chains, and polygons, and this data can be represented using the Spatial Topology Data Model feature. You can store information about topological elements and geometry layers in Oracle Spatial tables and metadata views. You can then perform certain spatial operations referencing the topological elements, for example, finding which chains (such as streets) have any spatial interaction with a specific polygon entity (such as a park).

This chapter describes the spatial data structures and data types that support the Topology Data Model feature, and what you need to do to populate and manipulate the structures. You can use this information to write a program to convert your topological data into formats usable with Spatial.


Although this chapter discusses some topology terms as they relate to Oracle Spatial, it assumes that you are familiar with basic topology concepts.

It also assumes that you are familiar with the main concepts, data types, and operations as documented in Oracle Spatial Developer's Guide.