Date Timezone Oracle PLSQL

SQL>
SQL> -- Using the INTERVAL YEAR TO MONTH Type
SQL>
SQL> -- INTERVAL YEAR TO MONTH type to store time intervals measured in years and months.
SQL>
SQL> CREATE TABLE coupons (
  2    coupon_id INTEGER,
  3    name VARCHAR2(30),
  4    duration INTERVAL YEAR(3) TO MONTH
  5  );
Table created.
SQL>
SQL> desc coupons;
 Name                                                                                                  Null?    Type
 ----------------------------------------------------------------------------------------------------- -------- --------------------
 COUPON_ID                                                                                              NUMBER(38)
 NAME                                                                                                   VARCHAR2(30)
 DURATION                                                                                               INTERVAL YEAR(3) TO MONTH
SQL>
SQL> drop table coupons;