The document inserts data into a PRODUCT table with columns for PID, PNAME, PRICE, and DISCOUNT. It inserts initial data for Mango, Apple, Pineapple, and Banana. It then inserts data for Cherry and Orange. An attempt to insert another Orange results in two rows with the same name, so one is later updated to Grapes.

1. SQL> INSERT INTO PRODUCT VALUES(1,'MANGO',60,5);
1 row created.
SQL> INSERT INTO PRODUCT VALUES (2,'APPLE',100,10)
2 ;
1 row created.
SQL> INSERT INTO PRODUCT VALUES (3,'PENEAPPLE',50,NULL);
1 row created.
SQL> INSERT INTO PRODUCT VALUES (4,'BANANA',40,NULL);
1 row created.
SQL> SELECT * FROM PRODUCT;
PID PNAME PRICE DISCOUNT
---------- ---------- ---------- ----------
1 MANGO 60 5
2 APPLE 100 10
3 PENEAPPLE 50
4 BANANA 40
================================================================================
=
SQL> INSERT INTO PRODUCT (PID,PNAME,PRICE,DISCOUNT)
2 VALUES (5,'CHERRY',80,8);
1 row created.
================================================================================
==
SQL> ;
1 INSERT INTO PRODUCT (PID,PNAME,PRICE,DISCOUNT)
2* VALUES(&PID,&PNAME,&PRICE,&DISCOUNT)
SQL> /
Enter value for pid: 6
Enter value for pname: 'ORANGE'
Enter value for price: 80
Enter value for discount: 20
old 2: VALUES(&PID,&PNAME,&PRICE,&DISCOUNT)
new 2: VALUES(6,'ORANGE',80,20)
1 row created.
SQL> ED
Wrote file afiedt.buf
1 INSERT INTO PRODUCT (PID,PNAME,PRICE,DISCOUNT)
2* VALUES(&PID,&PNAME,&PRICE,&DISCOUNT)
SQL> /
Enter value for pid: 7
Enter value for pname: 'ORANGE'
Enter value for price: 80
Enter value for discount: 20
old 2: VALUES(&PID,&PNAME,&PRICE,&DISCOUNT)
new 2: VALUES(7,'ORANGE',80,20)
1 row created.

2. SQL>
SQL> SELECT * FROM PRODUCT;
PID PNAME PRICE DISCOUNT
---------- ---------- ---------- ----------
1 MANGO 60 5
2 APPLE 100 10
3 PENEAPPLE 50
4 BANANA 40
5 CHERRY 80 8
6 ORANGE 80 20
7 ORANGE 80 20
7 rows selected.
================================================================================
===========
SQL> UPDATE PRODUCT SET PNAME = 'GRAPES',PRICE=60,DISCOUNT= NULL
2 WHERE PID=7;
1 row updated.
SQL> SELECT * FROM PRODUCT;
PID PNAME PRICE DISCOUNT
---------- ---------- ---------- ----------
1 MANGO 60 5
2 APPLE 100 10
3 PENEAPPLE 50
4 BANANA 40
5 CHERRY 80 8
6 ORANGE 80 20
7 GRAPES 60
7 rows selected.