Author:Casini, G; Gerber, A; Meyer, TDate:Oct 2012Conceptual modeling is nowadays mostly done using languages such as Entity-Relationship (ER) Models, Unified Modeling Language (UML), and Object-Role Modeling (ORM). These models are used to depict the ontological organization of relevant ...Read more
Author:Thomas, A; Gerber, AJ; Van der Merwe, ADate:Nov 2015Diagrams are often studied as visual languages with an abstract and a concrete syntax (concrete syntax is often referred to as visual syntax), where the latter contains the visual representations of the concepts in the former. A formal ...Read more