- From: Rezk Martin <mrezk@inf.unibz.it>
- Date: Wed, 14 Oct 2015 15:33:46 +0000
- To: Semantic Web <semantic-web@w3.org>, "User support for WebProtege and Protege Desktop" <protege-user@lists.stanford.edu>, "dl@dl.kr.org" <dl@dl.kr.org>
We are happy to announce the availability of
-ontop- v.1.16 (Now available for Protégé 5)
a Java framework to query ontologies with mappings to databases.
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 already
efficient database in order to enjoy the benefits of the RDF data
model, the SPARQL query language or RDF/OWL2QL inference.
And there is no need for expensive ETL or forward/backward chaining either.
You can use -ontop- as an API, a SPARQL end-point, or as a Protege plugin.
The highlights of this new release include:
*Support for most SPARQL functions.
*Support for column oriented RDBMS: MonetDB.
*Support for cloud RDBMS: SAP HANA.
*New optimization technique: Implicit-database-constraints
*New optimization technique: Exact-Mappings
*Bug Fixes
--regarding quotes in the WHERE clause of SQL query in mappings.
--regarding multiple subjects in the target of mapping of Ontop native syntax.
--regarding datetime columns using jtds driver
--regarding LIMIT with ORDER BY in oracle database
--regarding the MetaMappingExpander
Further details in:
https://github.com/ontop/ontop/wiki/OntopReleases#October_14_2015__Version_1160
The system is available for FREE at
http://ontop.inf.unibz.it/
Please, try it out and help us improve it by sending us your feedback.
Tell us how YOU are using -ontop-!
https://github.com/ontop/ontop/wiki/UseCases
To start using -ontop- try our tutorials!
-Easy Tutorial: Using Ontop from Protege
-Easy Tutorial: Using Ontop API from Eclipse
(https://github.com/ontop/ontop/wiki)
Cheers,
The -ontop- development team
References:
[1] https://github.com/ontop/ontop/wiki/OntopCLI
PS.
Website:
http://ontop.inf.unibz.it
Documentation:
https://github.com/ontop/ontop/wiki
Github:
https://github.com/orgs/ontop/
Follow us on Facebook
https://www.facebook.com/obdaontop
Received on Wednesday, 14 October 2015 15:36:54 UTC