rdfsdomainrange

RDFS:domain and RDFS:range are properties used in the Resource Description Framework Schema (RDFS) to define the domain and range of a property in an RDF graph. These properties are essential for specifying the types of resources that can be related by a property and the types of values that a property can have.

The RDFS:domain property is used to specify the class of resources that can be the subject of a property. For example, if we have a property "hasAuthor" that relates a book to its author, we can specify that the domain of "hasAuthor" is the class "Book". This means that only instances of the class "Book" can be the subject of the "hasAuthor" property.

Similarly, the RDFS:range property is used to specify the class of resources that can be the object of a property. Using the same example, we can specify that the range of "hasAuthor" is the class "Person". This means that only instances of the class "Person" can be the object of the "hasAuthor" property.

Together, RDFS:domain and RDFS:range provide a way to define the semantics of properties in an RDF graph, making it easier to reason about the relationships between resources. They are widely used in ontologies and knowledge graphs to ensure consistency and interoperability.