ER01 - Conceptual Models A Metamodel for Part - Whole Relationships for Reasoning on Missing Parts and Reconstruction Martin Doerr Dimitris Plexousakis Chryssoyla Bekiari Translation of a High-Level Temporal Model into Lower Level Models: Impact of Modelling at Different Description Levels Peter Kraft Jens Otto Sørensen Relationship Type Refinement in Conceptual Models with Multiple Classification Dolors Costal Antoni Olivé Ernest Teniente Return to ER01 session listing ©2004 Association for Computing Machinery