[DL] New Release: -ontop- v.1.15 (Now available for Protégé 5)

[Rezk Martin]

We are happy to announce the availability of

               -ontop- v.1.15 (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:

-Upgrade the Protege plugin to Protégé 5 !!
-New Command line interface [1]
-Better support for SPARQL BIND
-Support for SPARQL Concat and Replace
-Support for SQL Concat and Replace (in the mappings)
-Support for xsd:dateTimeStap
-Improved Optimization techniques (Contribution by Roman Konchakov)
-Implementation of Autoclosable interface for core classes in the API to support `try with resource`.
-Better support for DISTINCT modifier in the mappings.
-Bug Fixes
---Handle the 30-characters limit for variable names in Oracle.
---Fix the mapping render of Protege when multiple subjects are in the target of mapping.


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/

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