DBpedia

DBpedia (.org) is a community effort to extract structured information from Wikipedia and to make this information available on the Web. The datasets made by DBpedia can be queried with w:SPARQL language if MediaWiki/Extensions#LinkedWiki extension is installed on a mediawiki. This way lot of company information ( Founded in year, type of business entity etc. etc. ) can be fetched from datasets of infobox data on the 'pedia.

http://wiki.dbpedia.org/Datasets contains information on the available datasets such as Wikipedia infobox templates and categories

DBpedia datasets can be used in Consumium implementation wiki through the LinkedWiki extension

http://wiki.dbpedia.org/Ontology contains for example information about 169,000 organizations

Ontology classes useful in Consumium:

• Company ( 40.000+ instances )
• Non-ProfitOrganisation
• Food
  • Beverage

• MeanOfTransportation
  • Aircraft
  • Automobile
  • Locomotive
  • Ship

• Place
  • ArchitecturalStructure
    • Building
      • Hotel
      • Restaurant
      • ShoppingMall
    • Infrastructure
      • Airport
      • RouteOfTransportation
        • RailwayLine
        • Road
      • Station
        • RailwayStation

• PopulatedPlace
  • AdministrativeRegion
  • Continent
  • Country
  • Island
  • Settlement
    • City
    • Town
    • Village

Dbpedia infobox dataset contains information about 40,000 companies

http://dbpedia.org/sparql - contains ability to formulate SPARQL queries against DBpedia's datasets

See also:

• Database for a higher level view of what is going on with the databases
• Semantic MediaWiki is system for inputting and querying semantic data within the MediaWiki and it is implemented as extension(s).
• Wikidata and the underlying Wikibase extension