def deleteRegion(region_id): validationRegionID(region_id) RegionDao.deleteRecord(region_id)
def getRegionByID(region_id): validationRegionID(region_id) return RegionDao.getRegionByID(region_id)
def updateRegion(region_id, name): validationRegionID(region_id) validationRegionName(name) RegionDao.updateRegion(region_id, name)