Visualization and Management of Mappings in Ontology-based Data Access (Progress Report)

In this paper we present an in progress prototype for the graphical visualization and management of mappings for Ontology-based data access (OBDA). The tool supports the specification of expressive mappings linking a DL-Lite ontology to a relational source database, and allows the designer to graphically navigate them, according to various possible views, modify their textual representation, and validate their syntactic correctness. Furthermore, it gives preliminary support to the semantic analysis of the mappings, which aims to identify anomalies in the representation, like the specification of mapping queries that cannot return answers without contradicting the ontology. Such functionalities are currently being enhanced in our ongoing development of the tool.