RDF/XML

RDF/XML is a syntax,^[1] defined by the W3C, to express (i.e. serialize) an RDF graph as an XML document. RDF/XML is sometimes misleadingly called simply RDF because it was introduced among the other W3C specifications defining RDF and it was historically the first W3C standard RDF serialization format.

RDF/XML

Filename extension	.rdf
Internet media type	application/rdf+xml
Developed by	World Wide Web Consortium
Initial release	2012
Latest release	1.1 24 February 2014; 11 years ago (2014-02-24)
Type of format	Semantic Web
Container for	RDF data
Extended from	XML
Standard	Specification

RDF/XML is the primary exchange syntax for OWL 2, and must be supported by all OWL 2 tools.^[2]