资料来源 : Free On-Line Dictionary of Computing

Resource Description Framework
     
         (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 (http://www.w3c.org/RDF/)}.
     
        {W3C Resource Description Framework-RDF Model and Syntax
        Specification (http://www.w3.org/TR/REC-rdf-syntax/)}.
     
        (2000-03-25)