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ORM (Object-Role Modeling) is a type of fact-based modelling, which is a type of conceptual modelling. Object-Role Modeling is a graphical language. You use Object-Role Modeling to define data models, usually within the database design sphere, but extended to analysis of ontologies and for other uses. …

Object-Role Modeling is a type of Fact-Based Modelling. Object-Role Modeling (ORM) is a form of graphical conceptual modelling where each diagram ranges over the structure of the data model it describes. The ORM diagram below describes a data model where each Person in our model must be a Child, Teenager…