Insert Delete Update Oracle PLSQL

SQL>
SQL> CREATE TABLE purchase (
  2       product_name  VARCHAR2(25) NOT NULL,
  3       product_price NUMBER(4,2)  NOT NULL,
  4       purchase_date DATE
  5       );
Table created.
SQL>
SQL>
SQL> SET SCAN OFF
SQL>
SQL> INSERT INTO purchase VALUES ('Fifth Product''s Name', 25, '05-MAY-03');
1 row created.
SQL>
SQL> SET SCAN ON
SQL>
SQL>
SQL> SELECT * FROM purchase;
PRODUCT_NAME              PRODUCT_PRICE PURCHASE_
------------------------- ------------- ---------
Fifth Product's Name                 25 05-MAY-03
1 row selected.
SQL>
SQL> DROP TABLE purchase;
Table dropped.
SQL>