- From: Chris Bizer <chris@bizer.de>
- Date: Thu, 19 Feb 2009 18:14:18 +0100
- To: <public-lod@w3.org>, "'Semantic Web'" <semantic-web@w3.org>, <public-xg-rdb2rdf@w3.org>
Hi all, we are happy to announce the release of D2R Server and D2RQ Version 0.6 and recommend all users to replace old installations with the new release. The new release features: 1. significantly better performance due to an improved SPARQL-to-SQL rewriting algorithm. First experiments with the Berlin SPARQL Benchmark showed a factor 7 speedup. 2. D2R Server now supports dereferencing vocabulary URIs and the publication of vocabulary mappings such as owl:equivialentClass. 3. Oracle and PostgreSQL support. Beside of MySQL, we tested the new release with Oracle and PostgreSQL as underlying RDBMS using the Berlin SPARQL Benchmark qualification test. 4. lots of minor and mayor bug fixes. More information about the tools is found on the 1. D2RQ Platform website: http://www4.wiwiss.fu-berlin.de/bizer/d2rq/ 2. D2R Server website: http://www4.wiwiss.fu-berlin.de/bizer/d2r-server/ The new releases can be downloaded from Sourceforge http://sourceforge.net/projects/d2rq-map/ Lots of thanks for their magnificent work to: 1. Andreas Langegger and Herwig Leimer (Johannes Kepler Universität Linz) for optimizing the SPARQL-to-SQL rewriting algorithm. 2. Christian Becker (Freie Universität Berlin) for his work on vocabulary serving in D2R Server, fixing various bugs, testing V0.6 with Oracle and PostgreSQL, and putting the V0.6 release together. 2. Richard Cyganiak (DERI Galway / Freie Universität Berlin) for coordinating the work around the release, fixing lots of bugs, and supporting the user community on the D2RQ mailing list for the last 2 years. Please send feedback about the new release to the D2RQ and D2R Server mailing list https://lists.sourceforge.net/lists/listinfo/d2rq-map-devel Have fun with D2RQ and D2R Server! Cheers, Chris -- Chris Bizer Web-based Systems Group Freie Universität Berlin +49 30 838 55509 http://www.bizer.de chris@bizer.de
Received on Thursday, 19 February 2009 17:14:36 UTC