 A Tahsildar also known as Executive Magistrate of the tehsil concerned.In the revenue department, the Deputy Collectors (also called Deputy District Collector) is usually a tehsildars who report into the District Revenue Officer (DRO) who is also called the Additional District Collector and is the overall in-charge of revenue department for the district, DRO in turn reports into the District Collector (also called District Commissioner) who is in-charge of overall management of the district across all departments.Deputy Collectors are hired through State's Service Selection Commission, where as DRO and District Collector are usually Centre Civil Services employees appointed to the state cadre.