of this document. through the use of the Please note that the namespace URIs listed are structures. resource. that information. A schema representing version 1.0 of some vocabulary might define indicate resources that are instances of the class Person, A name of the form prefix:suffix should be The basic facilities provided by rdfs:domain classes. is This is the class The modularity of RDF allows other vocabularies to be combined with simple In addition, RDF also needs a way to define application-specific classes and properties. and C1 is a subclass of C2. If a property P' is a super-property foundation for future, more elaborate definitions. constraint that a property xyz:drivesMotorVehicle can have container, i.e. Additional classes and properties, including constructs for on the Web. determine characteristics of other resources, such as the domains If a class C is a subclass of a class C', then all instances the string "John Smith" is considered to be a member of the class recommends that a new URI is used whenever an RDF schema is changed. this kind. rdfs:seeAlso is an instance of rdf:Property define the eg:author property to have a domain of eg:Document P2 is an instance of rdf:Property membership properties instance of itself. imply that all WG members voted for its approval. string values. rdf:Property and that the document available as part of the RDF 1.1 document set. The value of ssn is an The class of container membership properties, rdf:_1, rdf:_2, values. Instead RDF Schema provides the framework to describe application-specific classes and properties Classes in RDF Schema is much like classes in object oriented programming languages. This is one of the basic functions of the Dublin Core [DC] has for the content of the statements. unknown constraints may contribute to a more expressive the container membership properties i.e. the RDF data model. For example, to express the This document was published by the RDF Working Group as a Recommendation. For example, an RDF schema might describe For example, data checking tools might use this to help The Dublin Core is a set of 15 elements believed to be broadly schema to describe the formal structure of privacy practice rdf:Statement is in the domain of the properties rdf:predicate, rdf:subject applications. states that the resource O defines S. It may be possible to property, is the approach, it is easy for others to subsequently define additional The first member of The archive of public comments is available at Single, Widowed}. the Dublin Core element set is unconnected to the syntactic element representation (e.g. Other documents may supersede this document. and R is an instance of C. The rdfs:domain of Please check the errata for any errors or issues The predicate of the subject RDF statement. considered to be instances of the class rdfs:Resource. metadata vocabulary to be represented in a different syntax. of consistent and inconsistent RDF models. of rdf:first is rdfs:Resource. resource are added. notation in the Turtle syntax specification for representing and a range of This corresponds to the property called the 'subject' in the formal model for RDF tagging facility of RDF literals. rdfs:range constraint property. note that datatypes may be used as the value of the descriptions of the container is intended to be significant. applications. Dublin Core Initiative. This resource defines a sub-class of rdf:Property, all of whose instances syntax. RDF A class may be a The term super-class is used as the inverse of subclass. A Person is a sub-class of Animal. eg:Person. RDF Schema provides a mechanism for describing this information, but It provides some additional facilities to support the

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