Improving the Data Quality of Relational Databases Using OBDA and OWL 2 QL

The Semantic Web aims to enable the integration and sharing of data across different applications and organizations. A first step toward reaching this goal is a closer cooperation between the best technology to deal with large volumes of data, i.e. currently relational DBMS, and ontologies. The Ontology-Based Data Access (OBDA) approach tackles this issue by providing a conceptual view over data repositories and inference enabled query answering solutions. OBDA is based on the DL - Lite family of Description Logics (DL) which have inspired the OWL 2 QL profile.