[DL] -ontop- New Release!!! (1.16)
mrezk at inf.unibz.it
Wed Oct 14 17:33:46 CEST 2015
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
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
--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:
The system is available for FREE at
Please, try it out and help us improve it by sending us your feedback.
Tell us how YOU are using -ontop-!
To start using -ontop- try our tutorials!
-Easy Tutorial: Using Ontop from Protege
-Easy Tutorial: Using Ontop API from Eclipse
The -ontop- development team
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