W3 Vocabulary Prefixes
| Prefix | URI | Description | For more details see | Origin |
|---|---|---|---|---|
| grddl | http://www.w3.org/2003/g/data-view# | GRDDL | Gleaning Resource Descriptions from Dialects of Languages (GRDDL) | W3C Recommendation |
| ma | http://www.w3.org/ns/ma-ont# | Ontology for Media Resources | Ontology for Media Resources 1.0 | W3C Recommendation |
| owl | http://www.w3.org/2002/07/owl# | OWL | OWL Overview | W3C Recommendation |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# | RDF | RDF Semantics | W3C Recommendation |
| rdfa | http://www.w3.org/ns/rdfa# | RDFa Vocabulary | RDFa Core 1.1 | W3C Working Draft on Recommendation track |
| rdfs | http://www.w3.org/2000/01/rdf-schema# | RDF Schema | RDF Semantics | W3C Recommendation |
| rif | http://www.w3.org/2007/rif# | RIF | RIF Overview | W3C Recommendation |
| skos | http://www.w3.org/2004/02/skos/core# | SKOS Core | SKOS Simple Knowledge Organization System Reference | W3C Recommendation |
| skosxl | http://www.w3.org/2008/05/skos-xl# | SKOS eXtension for Labels | SKOS Simple Knowledge Organization System Reference | W3C Recommendation |
| wdr | http://www.w3.org/2007/05/powder# | POWDER | Protocol for Web Description Resources (POWDER): Formal Semantics | W3C Recommendation |
| void | http://rdfs.org/ns/void# | VoID | Describing Linked Datasets with the VoID Vocabulary | W3C Interest Group Note |
| wdrs | http://www.w3.org/2007/05/powder-s# | POWDER-S | Protocol for Web Description Resources (POWDER): Formal Semantics | W3C Recommendation |
| xhv | http://www.w3.org/1999/xhtml/vocab# | RDFa Default Prefix | RDFa Core 1.1 | W3C Recommendation (although the reference is on RDFa 1.1, the vocabulary is already defined in RDFa 1.0) |
| xml | http://www.w3.org/XML/1998/namespace | XML Reserved Prefix | Namespaces in XML 1.0 | W3C Recommendation |
| xsd | http://www.w3.org/2001/XMLSchema# | XML Schema Datatypes | XML Schema Part 2: Datatypes Second Edition | W3C Recommendation |
Some vocabularies are currently in development at W3C and they may become W3C Recommendations or Notes, i.e., may become part of the table above. It is therefore advisable to consider their prefixes reserved for now. These are:
- prov
- for “http://www.w3.org/ns/prov#”, see “Provenance Ontology”
- sd
- for “http://www.w3.org/ns/sparql-service-description#”, see “SPARQL 1.1 Service Description”Â
- org
- for “http://www.w3.org/ns/org#”, see “An organization ontology”
- gldp
- for “http://www.w3.org/ns/people#”, see “Terms for describing people”
- cnt
- for “http://www.w3.org/2008/content#”, see “Representing Content in RDF 1.0”
- dcat
- for “http://www.w3.org/ns/dcat#”, see “Data Catalog Vocabulary (DCAT)”
- earl
- for “http://www.w3.org/ns/earl#”, see “Evaluation and Report Language (EARL) 1.0 Guide”
- ht
- for “http://www.w3.org/2006/http#”, see “HTTP Vocabulary in RDF 1.0”
- ptr
- for “http://www.w3.org/2009/pointers#”, see “Pointer Methods in RDF 1.0”
| Prefix | URI | Description | For more details see |
|---|---|---|---|
| cc | http://creativecommons.org/ns# | ccREL | ccREL: The Creative Commons Rights Expression Language |
| ctag | http://commontag.org/ns# | Common Tag Ontology | Common Tag Specification |
| dc | http://purl.org/dc/terms/ | Dublin Core Metadata Terms | DCMI Metadata Terms |
| dcterms | http://purl.org/dc/terms/ | Dublin Core Metadata Terms | DCMI Metadata Terms |
| foaf | http://xmlns.com/foaf/0.1/ | FOAF | FOAF Vocabulary Specification |
| gr | http://purl.org/goodrelations/v1# | GoodRelations Ontology | GoodRelations Language Reference |
| ical | http://www.w3.org/2002/12/cal/icaltzd# | iCalendar terms in RDF | iCalendar terms in RDF |
| og | http://ogp.me/ns# | Facebook’s Open Graph protocol | Open Graph Protocol |
| rev | http://purl.org/stuff/rev# | RDF Review Vocabulary | RDF Review Vocabulary |
| sioc | http://rdfs.org/sioc/ns# | SIOC Core Ontology | SIOC Core Ontology Specification |
| v | http://rdf.data-vocabulary.org/# | Google Rich Snippets’ Vocabularies | Rich snippets (microdata, microformats, and RDFa) |
| vcard | http://www.w3.org/2006/vcard/ns# | vCard in RDF | Representing vCard Objects in RDF |
| schema | http://schema.org/ | The Schema.org vocabulary | Full Schema.org documentation |
Vocabulary Terms
| Term | URI | Description | For more details see | Origin |
|---|---|---|---|---|
| describedby | http://www.w3.org/2007/05/powder-s#describedby | Refers to resource providing a description. | POWDER: Formal Semantics, Section 5, POWDER Processor Semantics | |
| license | http://www.w3.org/1999/xhtml/vocab#license | Refers to a license associated with this context. | IANA Link Relations | |
| role | http://www.w3.org/1999/xhtml/vocab#role | indicates the purpose of the resource. See the XHTML Role Vocabulary for roles in this vocabulary space | XHTML Role Attribute Module |
Ivan Herman, ivan@w3.org, W3C, Semantic Web Activity Lead, 2012-05-27
$Date: 2012/09/23 22:02:49 $
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