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Answering SPARQL Queries over Databases under OWL 2 QL Entailment Regime

Published on Dec 19, 20141920 Views

Roman Kontchakov

We present an extension of the ontology-based data access platform Ontop that supports answering SPARQL queries under the OWL 2 QL direct semantics entailment regime for data instances stored in relat

ISWC 2014 - Trentino

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Semantic Web

Chapter list

Answering SPARQL Queries over Databases under OWL 2 QL Entailment Regime00:00
Ontology-Based Data Access00:14
Step 1. OWL 2 QL Entailment Regime04:25
Step 2: From SPARQL to SQL (1)07:14
Step 2: From SPARQL to SQL (2)08:03
Step 2: From SPARQL to SQL (3)09:44
Step 3: From Triples to Relations13:06
Implementation15:11