- From: Rodriguez-Muro Mariano (A) <rodriguez@inf.unibz.it>
- Date: Wed, 31 Jul 2013 09:48:45 +0000
- To: "<optique-all@ifi.uio.no>" <optique-all@ifi.uio.no>, "dl@dl.kr.org" <dl@dl.kr.org>, Semantic Web List <semantic-web@w3.org>, "Sesame discussion list" <sesame-general@lists.sourceforge.net>, "Protege 4.x support and discussion" <p4-feedback@lists.stanford.edu>, "users@jena.apache.org" <users@jena.apache.org>, "<owlapi-developer@lists.sourceforge.net>" <owlapi-developer@lists.sourceforge.net>
We are happy to announce the availability of -ontop- v1.8 a Java framework to query RDBMS using SPARQL over RDF(s) and OWL ontologies. Is available as a Sesame and OWLAPI library, SPARQL endpoint and Protege 4 plugin. If you are interested in virtual RDF graphs, R2RML mappings and/or RDFS/OWL2QL reasoning, then -ontop- is for you. The system implements the cutting edge SPARQL-to-SQL and query optimisation techniques that allow it to answer SPARQL queries using SQL databases while obtaining great performance. With -ontop-, you don't need to move your data from your DB to enjoy the benefits of the RDF data model, the SPARQL query language or RDF/OWL2QL inference. There is no need for expensive ETL or forward/backward chaining either. The highlights of this new release include: * SOURCE CODE IS NOW AVAILABLE (See the new license terms) * Improved mapping syntax (see full changelog) * New command line tools to query, automatically generate mappings, generate RDF/OWL from mappings * Faster SQL translation * Improved the SQL queries generated by Quest by avoiding some operations when unnecessary (e.g., casting), and placing optimally the JOIN conditions in the SQL query. * Major restructuring of code for performance and clarity of the API (this is still ongoing) * Many important bugfixes for CONSTRUCT, ASK and DESCRIBE queries * -ontopPro- is now compatible with Protege 4.3 * Many bug fixes Cheers, The -ontop- development team
Received on Wednesday, 31 July 2013 09:49:16 UTC