Structural Entities of an Ontology-Driven Unifying Metamodel for UML, EER, and ORM2

Software interoperability may be achieved by using their respective conceptual data models. However, each model may be represented in a different conceptual data modelling language for the tool’s purpose or due to legacy issues. Several translations between small subsets of language features are known, but no unified model exists that includes all their language features. Aiming toward filling this gap, we designed a common and unified, ontology-driven, metamodel covering and unifying EER, UML Class Diagrams v2.4.1, and ORM2. This paper presents the static, structural, components of the metamodel, highlighting the common entities and summarizing some modelling motivations.