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Extending OCL to Specify and Validate Integrity Constraints in UML-GeoFrame Conceptual Data Model

This paper describes a proposal for OCL (Object Constraint Language) by adding geographical features to assist the geographical data modeling. OCL can be used to complement the diagrams when the UML constructors do not allow the specification of all requirements related to the application domain. The objective is to complement and validate conceptual data diagrams built with constructors of the UML-GeoFrame data model, with and extended OCL used for constraint topological relationships in the data model itself and available in his diagram to access stereotypes for direct user defined constraints.