Mapping of SQL relational schemata to OWL ontologiesAstrova, Irina; Kalja, AhtoProceedings of the 6th WSEAS International Conference on Applied Informatics and Communications : Crete Island, Greece, August 18-20, 20062006 / p. 375-380 https://dl.acm.org/doi/abs/10.5555/1366421.1366487