"Known schemas in Oracle" http://www.adp-gmbh.ch/ora/misc/known_schemas.html http://www.adp-gmbh.ch/ora/misc/known_schemas.html http://www.adp-gmbh.ch/ora/misc/known_schemas.html http://www.adp-gmbh.ch/ora/misc/known_schemas.html "Known schemas in Oracle" HR schema