Querying Databases from Description Logics.
Paolo Bresciani · 1995
Two different aspects of data management are addressed by description logics (DL) and databases (DB): the semantic organization of data and powerful reasoning services (by DL) and their efficient management and access (by DB). It is recently emerging that experiences from both DL and DB should profitably cross-fertilize each other, and a great interest is rising about this topic. In the present paper our technique, that allows uniform access -- by means of a DL-based query language -- to information distributed over knowledge bases and databases, is briefly reviewed. Our extended paradigm integrates the separately existing retrieving functions of description logics management systems (DLMS) and of database management systems (DBMS) in order to allow, via a query language grounded on a DL-based schema knowledge, uniformly formulating and answering queries, so that uniform retrieval from mixed knowledge/data bases is possible. In particular, some new developments extending those presente...