Using OWL, the Web Ontology Language

While the RDF and corresponding schema definitions (RDFS) provide a structure for the semantic view of the information assets, there are some limitations with RDFS. RDFS cannot describe the entities in sufficient detail. There is no way to define localized ranges for the entity attributes, and the domain-specific constraints cannot be explicitly expressed. The existence or non-existence of a related entity, along with cardinality constraints (one-to-one, one-to-many, and so on), cannot be represented with RDFS. It is difficult to represent transitive, inverse, and symmetrical relationships. One of the important aspects of real-world entity relationships is logical reasoning and inferences, without explicit ...

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