RDFS and OWL Summary

semantic-web

Summary from RDFS, RDFS-Plus and OWL

RDFS

rdfs:subClassOf - Members of subclass are also member of superclass.
rdfs:subPropertyOf - Relations described by subproperty also hold for superproperty.
rdfs:domain - The subject of a triple is classified into the domain of the predicate.
rdfs:range - The object of a triple is classified into the range of the predicate.

rdfs:label - No inferential semantics, printable name.
rdfs:comment - No inferential semantics, information for readers of the model.

owl:equivalentClass - Members of each class are also members of the other.
owl:equivalentProperty - Relations that hold for each property also hold for the other.
owl:sameAs - All statements about one instance hold for the other.

owl:inverseOf - Exchange subject and object.
owl:TransitiveProperty - Chains of relationships collapse into a single relationship.
owl:SymmetricProperty - A property that is its own inverse.
owl:FunctionalProperty - Only one value allowed (as object).
owl:InverseFunctionalProperty - Only one value allowed (as subject).
owl:ObjectProperty - Property can have resource as object.
owl:DatatypeProperty - Property can have data value as object

owl:Restriction - describes classes by restricting the values allowed for certain properties.
owl:hasValue - refers to a single value for a property.
owl:someValuesFrom - refers to a set from which some value for a property must come.
owl:allValuesFrom - refers to a set from which all values for a property must come.
owl:onProperty - A link from a restriction to the property it restricts.

Each of these is used to create a new class, based on the specified set
owl:unionOf, owl:intersectionOf, owl:complementOf
owl:oneOf - Specifies that a class consists just of the listed members.
owl:differentFrom - Specifies that one individual is not owl:sameAs another.
- This is particularly useful when making counting arguments.
owl:disjointWith Specifies that two classes cannot share a member.
- This is often used as a sort of wholesale version of owl:differentFrom.
owl:cardinality, owl:minCardinality, owl:maxCardinality
- specifies information about the number of distinct values for some property.

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