bool RDStation::exists() const { return RDDoesRowExist("STATIONS","NAME",RDEscapeString(station_name)); }
bool RDCart::exists() const { return RDDoesRowExist("CART","NUMBER",cart_number); }
bool RDCut::exists() const { return RDDoesRowExist("CUTS","CUT_NAME",cut_name,cut_db); }
bool RDFeed::exists() const { return RDDoesRowExist("FEEDS","NAME",feed_keyname); }
bool RDUser::exists() const { return RDDoesRowExist("USERS","LOGIN_NAME",user_name); }
bool RDSvc::exists() const { return RDDoesRowExist("SERVICES","NAME",svc_name); }