Limitations of the Expressive Power of RDF Schema(3) Cardinality restrictions E.g. a person has exactly two parents, a course is taught by at least one lecturer Special characteristics of properties Transitive property(like greater than) Unique property(like " is mother of A property is the inverse of another property(like eats" and"is eaten by) 11 Chapter 4 A Semantic Web primerChapter 4 A Semantic Web Primer 11 Limitations of the Expressive Power of RDF Schema (3) ⚫ Cardinality restrictions – E.g. a person has exactly two parents, a course is taught by at least one lecturer ⚫ Special characteristics of properties – Transitive property (like “greater than”) – Unique property (like “is mother of”) – A property is the inverse of another property (like “eats” and “is eaten by”)