Obda Systems

OBDA Systems proposes state-of-the-art solutions based on the most recent innovations in the field of semantic technologies to provide its clients with a direct and effective means for extracting key data from large and complex datasets. The foundation of these solutions is representation and reasoning through ontology modelling. Definition of an o... ntological model of the domain of interest of a business organization, expressed through a graphical language that is easy to understand for the end user, and supplied with a rich documentation. In-depth analysis of the data sources of the business organization, in order to produce a complete documentation of the database, comprising the conceptual model. Direct end-user access to data through the definition of SPARQL queries over the ontology, exploiting Mastro's automatic ontology reasoning techniques. The global view provided by the ontology offers a mean to achieve direct access and integration of the information that can be spread out over several underlying data sources. The definition of an ontological model and its connection through mappings to the data sources allow to evaluate the quality of the data with respect to the semantic constraints of the ontology. Adoption of the techniques and standards of the Semantic Web to form semantic links to other ontologies on the Web, producing datasets through the ontology which achieve the 5 stars of the Open Data. Mastro is an OBDA management system. Ontologies in Mastro are specified through languages of the DL-Lite family of lightweight Description Logics. The ontology is connected to external relational data management or data federation systems through a mapping establishing a semantic relation between SQL queries issued over the underlying databases and elements of the ontology. To access data, users can specify SPARQL queries over the ontology and exploit Mastro's query answering services. Mastro Studio is a web-based platform for data management through the OBDA paradigm. Mastro Studio provides an environment ...Read More