= Term: Model = In an !InfoGrid context, the term [wiki:Model] is used similarly to how UML or entity-relationship modeling uses it. It could also be called a conceptual schema, or ontology. An InfoGrid [wiki:Model] primarily consists of: * [wiki:EntityType EntityTypes], which in turn define [wiki:PropertyType PropertyTypes]. * [wiki:RelationshipType RelationshipTypes], which in turn define [wiki:RoleType RoleTypes]. They are arranged in [wiki:SubjectArea SubjectAreas]. By default, InfoGrid [wiki:Model Models] use the [wiki:Docs/ModelDefinitionFormat model definition file format]. See also: * EntityType * PropertyType * RelationshipType * RoleType * [wiki:Module], which sounds similar but is something else entirely * SubjectArea.