Mastro at work: Experiences on ontology-based data access

We report on an experimentation of Ontology-based Data Access (OBDA) carried out in a joint project with SAPIENZA University of Rome, Free University of Bolzano, and Monte dei Paschi di Siena (MPS), where we used MASTRO for accessing, by means of an ontology, a set of data sources of the actual MPS data repository. By both looking at these sources, and by interviews with domain experts, we designed both the ontology representing the conceptual model of the domain, and the mappings between the ontology and the sources. The project confirmed the importance of several distinguished features of DL-LiteA,Id to express the ontology and has shown very good performance of the MASTRO system in all the reasoning tasks, including query answering, which is the most important service required in the application.