From Semantic Web Standards


Name of the tool: D2RQ
Home page: http://d2rq.org
Date of latest release:
Programming language(s) that can be used with the tool: Java
Relevant semantic web technologies: RDF, SPARQL, RDB2RDF
Categories: RDB2RDF, SPARQL Endpoint, Converter, RDF Generator
See also:
Public mailing list:
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DOAP reference:
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(Tool description last modified on 2012-07-4.)


The D2RQ Platform is a system for accessing relational databases as virtual, read-only RDF graphs. It offers RDF-based access to the content of relational databases without having to replicate it into an RDF store. Using D2RQ you can:

  • query a non-RDF database using SPARQL
  • access the content of the database as Linked Data over the Web
  • create custom dumps of the database in RDF formats for loading into an RDF store
  • access information in a non-RDF database using the Apache Jena API

D2RQ is Open Source software and published under the Apache license.