Concept A concept is either an element or a relationship. Type Abstract class URI this:Concept Class hierarchy Concept Element Relationship Slots Name Cardinality Type Description description 0..1 string Description for the Concept. id 0..1 string Unique identifier for Concepts. description Description for the Concept. URI this:Concept.description Cardinality 0..1 Type string id Unique identifier for Concepts. URI this:Concept.id Cardinality 0..1 Type string CompositionRelationship DataObject