(RFC 3870 published September 2004, subtype last updated September 2004) MIME media type name: application MIME subtype name: rdf+xml Required parameters: none Optional parameters: charset Same as charset parameter of application/xml, defined in RFC 3023 [4]. Encoding considerations: Same as charset parameter of application/xml, defined in RFC 3023 [4]. Security considerations: See "Security Considerations" (Section 6). Interoperability considerations: It is RECOMMENDED that RDF documents follow the newer RDF/XML Syntax Grammar [1] as opposed to the older RDF Model and Syntax specification [7]. RDF is intended to allow common information to be exchanged between disparate applications. A basis for building common understanding is provided by a formal semantics [3], and applications that use RDF should do so in ways that are consistent with this. Published specification: see RDF/XML Syntax Grammar [1] and RDF: Concepts and Abstract Syntax [2] and the older RDF Model and Syntax [7] Applications which use this media type: RDF is device-, platform-, and vendor-neutral and is supported by a range of Web user agents and authoring tools. Additional information: Magic number(s): none Although no byte sequences can be counted on to consistently identify RDF, RDF documents will have the sequence "http://www.w3.org/1999/02/22-rdf-syntax-ns#" to identify the RDF namespace. This will usually be towards the top of the document. File extension(s): .rdf Macintosh File Type Code(s): "rdf " For further information: Dan Brickley RDF Interest Group More information may be found on the RDF website: Intended usage: COMMON Author/Change controller: The RDF specification is a work product of the World Wide Web Consortium. The W3C and the W3C RDF Core Working Group have change control over the specification.