Integrating and supporting entity relationship and object role models

This paper describes the conceptual integration and computer-based support of two important groups of conceptual data models, Entity Relationship Models and Object Role Models (e.g. NIAM). We perform conceptual integration using the conceptual data modelling language CoCoA to specify separate data models of individual notations. We then merge these into an integrated conceptual data model for both notations. These data models form the basis of the repository for an I-CASE tool supporting modelling with both notations, with full consistency management between the two notation data models.