1. An apparatus for accessing and managing a relational database, said apparatus comprising: a processor; an arrangement for querying a relational database; and an arrangement for accessing semantically relevant query results from the relational database, said accessing arrangement configured to: access at least one ontology; extract domain knowledge from at least one ontology; and employ the domain knowledge in obtaining the semantically relevant query results from the relational database; wherein said semantically relevant query results comprise direct results obtained directly from relational database tables, inferred results inferred utilizing information explicitly listed in the relational database and the at least one ontology, and related results obtained utilizing data in the relational database tables and one or more definitions of similarity of concepts and individuals based on the at least one ontology; and wherein said accessing arrangement acts to: apply a query generalization strategy, the query generalization strategy comprising applying strategies to an original query to obtain a generalized level of queries comprising one or more general queries and repeatedly applying the strategies to the generalized level of queries until a prespecified number of results is obtained; and rank results obtained through the query generalization strategy based on a number generalizations performed.
9. The apparatus according to claim 1 , further comprising a standby description logic reasoner configured for backing up said description logic reasoner.