"URI reference" was another name for IRI. An IRI is basically a URI that may contain non-ASCII characters.
See the (outdated) RDF 1.0 spec: http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/#section-Graph-URIref If I'm not mistaken, the term "URI reference" was used in RDF 1.0 because the RFC for IRIs was not finished yet. RDF 1.1 only uses the term "IRI". A namespace URI - or more precisely namespace IRI - is the prefix shared by a certain set of RDF IRIs, e.g. "http://dbpedia.org/resource/";. Quote from the RDF 1.1 spec: "Namespace IRIs and namespace prefixes are not a formal part of the RDF data model. They are merely a syntactic convenience for abbreviating IRIs." http://www.w3.org/TR/rdf11-concepts/#dfn-namespace-iri Hope that helps. JC On 1 May 2014 21:49, Luciane Monteiro <[email protected]> wrote: > What's the exact difference between a URI, a URIref and a namespace URI? > > Thank you! > > ------------------------------------------------------------------------------ > "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE > Instantly run your Selenium tests across 300+ browser/OS combos. Get > unparalleled scalability from the best Selenium testing platform available. > Simple to use. Nothing to install. Get started now for free." > http://p.sf.net/sfu/SauceLabs > _______________________________________________ > Dbpedia-discussion mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion > ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available. Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
