Resource Description Framework

World-Wide Web, specification, data (RDF) A specification

being developed in 2000 by the W3C as a foundation for

processing meta-data regarding resources on the Internet,

including the World-Wide Web.

Resource Description Framework data consists of resources

(nodes), and property/value pairs describing the resource.

A node is any object which can be pointed to by a URI,

properties are attributes of the node, and values can be

either atomic values for the attribute, or other nodes. For

example, information about a particular web page (a node),

might include the property "Author". The value for the Author

property could be either a string giving the name of the

author, or a link to a resource describing the author.

Resource Description Framework only specifies a mechanism for

encoding and transferring meta-data. It does not specify what

that meta-data should, or can be. RDF does not, for example,

define an "Author" attribute. Sets of properties are defined

within RDF Vocabularies (or Schemas). Anynone can create an

RDF schema, describing a specialized set of properties, by

creating a resource, referenced by the Schema URI, which

provides a human- and machine-understandable definition of the

schema's properties. The description of a node may include

properties defined in different schemas. The properties

within a resource description are associated with a certain

schema definition using the XML namespace mechanism.

Schemas currently being developed include a content screening

system modeled after PICS, and a bibliographic vocabulary,

such as the Dublin Core Initiative.

Home .

W3C Resource Description Framework-RDF Model and SyntaxSpecification .

(2000-03-25)