Incorporating UML Class and Activity Constructs into UEML

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The Unified Enterprise Modelling Language (UEML) aims to become a hub for integrated use of enterprise and information systems (IS) models expressed using different languages. The paper explains how central constructs from UML's class and activity diagrams have been incorporated into UEML. As a result, the semantics of UML's central constructs for representing classes and activities have become more precisely defined in terms of the common UEML ontology. Through their ontology images, the two diagram types are also on the way to become interoperable with other enterprise and IS modelling languages in UEML.