From Semantic Web Standards


Name of the tool: Ultrawrap
Home page: http://www.capsenta.com
Date of latest release: 2012-05-14 (verify)
Programming language(s) that can be used with the tool:
Relevant semantic web technologies: RDF, RDFS, SPARQL, OWL, RDB2RDF, R2RML, Direct Mapping
Categories: SPARQL Endpoint, RDB2RDF, Converter, RDF Generator
See also:
Public mailing list:
Preferred project URI:
DOAP reference:
Company or institution: Capsenta

(Tool description last modified on 2013-01-8.)


Ultrawrap is the only system that can execute SPARQL as fast as SQL. Ultrawrap has been crafted to make maximal use of existing SQL infrastructure, particularly the databases own metadata and its SQL optimizer. Across benchmarks and relational database platforms, the scalability of Ultrawrap consistently matches the scalability of the underlying relational database system.

  • SPARQL on Legacy RDBMS
    • Real-time, consistent DB access
    • RDF dumping optional (ETL)
    • SPARQL as fast as SQL
  • Implements the entire RDB2RDF Standard
    • R2RML
    • Direct Mapping
  • Additional Features
    • Automatic SQL Schema to OWL mapping
    • GUI-based Mapping
    • Compatible with D2R mappings