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Mulgara is a triplestore. It is Open Source, massively scalable, and transaction-safe[1]. Mulgara instances can be queried via the iTQL query language, and soon via the SPARQL query language[2][3].

History Edit

As early as April 2004[4], Tucana Technologies Inc was developing Tucana Knowledge Server, a proprietary RDF database relying on an Open Source basis they called Kowari.

In September 2005, Tucana was bought by Northrop Grumman.[5] In January 2006, Northrop Grumman threatened a Kowari developer with legal action if he released any new version of Kowari[6]. As a consequence, Kowari was forked in July 2006. It was renamed to Mulgara because Northrop Grumman owns the Kowari trademark. All development on Kowari has stopped[7] and the community moved to Mulgara.

Internals Edit

Mulgara is not based on a relational database due to the large numbers of table joins encountered by relational systems when dealing with metadata. Instead, Mulgara is a completely new database optimized for metadata management. Mulgara models hold metadata in the form of short subject-predicate-object statements, much like the W3C's Resource Description Framework (RDF) standard. Metadata may be imported into or exported from Mulgara in RDF or Notation 3 form.[1]

References Edit

  1. 1.0 1.1 Mulgara | Semantic Store - Frequently Asked Questions
  2. Welcome to the new Mulgara project!
  3. Working notes
  4. http://www.w3.org/2004/04/13-swdd/TucanaWWW2004DevDay.ppt
  5. Northrop Grumman Acquires Proprietary Software from Tucana Technologies
  6. SourceForge.net: kowari-general
  7. SourceForge.net: Kowari

External links Edit

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