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Difficulties arise when conceptual modeling lacks ontological clarity andrigorous definitions, which is especially the case in the relationshipconstruct. Evidence shows that use of relationships is often problematic whenit comes to communicating the form of meaning of an application domain.Research on this topic is important because relationships are central to anumber of approaches and commonly used by practitioners. In this paper, westudy the notion of relation or relationship in the context of conceptualmodeling. Specifically, we focus on the notion of relationship used in theentity-relationship (ER) model. The ER model is scrutinized through a new formof conceptual modeling called the thinging machine (TM) to pursue furtherunderstanding of the semantics of the relationship concept. The ER model iscomposed of three fundamental categories (i.e., entity, relationship andattribute), whereas TM is built from one ontological category called thething/machine (thimac). Several ER diagrams are re-casted as TM diagrams,creating a categorical collision with interesting implications regarding thestatus of the conception of relationship in a conceptual model. The re-modelingshows that the relational construct is dissipated into TM flows of things andchronology of events.

Dissipating with Relations: Implication for the Entity-Relationship Model