Define alias for  a given device name

        :param argin: Str[0] = device name
        Str[1] = alias name
        :type: tango.DevVarStringArray
        :return:
        :rtype: tango.DevVoid

def DbPutDeviceAlias(self, argin):
        """ Define alias for  a given device name

        :param argin: Str[0] = device name
        Str[1] = alias name
        :type: tango.DevVarStringArray
        :return:
        :rtype: tango.DevVoid """
        self._log.debug("In DbPutDeviceAlias()")

        if len(argin) < 2:
            self.warn_stream("DataBase::DbPutDeviceAlias(): insufficient number of arguments ")
            th_exc(DB_IncorrectArguments,
                   "insufficient number of arguments to put device alias",
                   "DataBase::DbPutDeviceAlias()")

        device_name = argin[0]
        device_alias = argin[1]
        self.db.put_device_alias(device_name, device_alias)