Effective support of databases with ontological dependencies: Relational languages instead of description logics

The paper provides a brief survey of the languages for efficient support of access to the databases satisfying the ontological dependencies. The first part of the paper retraces the development of description logics intended for application in the database and information systems context, as well as experimental results of building of the "ontologically based" data access systems. The main part of the paper is devoted to the survey of the development of relational database languages providing broader and more efficient support of queries over databases with the ontological dependencies compared to the description logics.