Topology is an important kind of knowledge in Geographical Information Systems (GISs). In this paper a small set of user-oriented topological relationships and operators is used as formal background for the implementation of topology on top of the O2 Database Management System (DBMS). Object-oriented (O-O) systems allow to model geometric data and topological relationships thanks to the object identity, the modeling flexibility, the inheritance, and the overriding/overloading features. The representation adopted for the topology is a trade-off between avoiding data redundancy and maintaining database schema independence. Examples of topological queries in O2SQL conclude the paper.

Topology in an O-O GIS

CLEMENTINI, ELISEO;
1994-01-01

Abstract

Topology is an important kind of knowledge in Geographical Information Systems (GISs). In this paper a small set of user-oriented topological relationships and operators is used as formal background for the implementation of topology on top of the O2 Database Management System (DBMS). Object-oriented (O-O) systems allow to model geometric data and topological relationships thanks to the object identity, the modeling flexibility, the inheritance, and the overriding/overloading features. The representation adopted for the topology is a trade-off between avoiding data redundancy and maintaining database schema independence. Examples of topological queries in O2SQL conclude the paper.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/30583
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