Wikidata is a collaboratively edited knowledge base operated by the Wikimedia Foundation. It is intended to provide a common source of certain types of data which can be used by Wikimedia projects such as Wikipedia. Wikidata functions as a document-oriented database, centred on individual items. Items represent topics, for which basic information is stored that identifies each topic.

Prefix

wikidata

Alternative Prefixes

wd wdeschema WD_Entity

Keywords

chemistry genomics metabolomics proteomics subject agnostic

License

CC0-1.0

Links

Homepage

Contact

Denny Vrandečić   0000-0002-9593-2294   vrandezo

Pattern for Local Unique Identifiers

Local identifiers in Wikidata should match this regular expression:
^(Q|P|E|L)\d+$

Example Local Unique Identifiers

Q47475003   Resolve
L704278   Resolve
P675   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from Wikidata should match this regular expression:
^wikidata:(Q|P|E|L)\d+$

Example CURIEs

wikidata:Q47475003
wikidata:L704278
wikidata:P675

Publications

2012 Wikidata

A summary of the relations in the Semantic Farm schema can be found here.

Has Parts (bfo:0000051 )

wikidata.entity wikidata.property

In Collection

Synapse.org external links DALIA Resources

The metaregistry provides mappings between the Semantic Farm and other registries. There are 9 mappings to external registries for this resource with 5 unique external prefixes.

When using this resource in RDF, the following URI format should be used:

http://www.wikidata.org/entity/$1

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier Q47475003 is used to demonstrate the providers available for Wikidata. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.

Additional providers curated in the Semantic Farm are listed here. These are typically inherited from Identifiers.org or Prefix Commons, and need extra curation.