Chapter 8, Problem 15P

Explanation of Solution

UPDATE command:

• The UPDATE command is employed to update information present in a table.
• It is always used with SET keyword either in bulk or individually.

Syntax for update the value in the table is given as follows:

UPDATE table_name

SET column1 = data1, column2 = data2, ...

WHERE condition;

Update values into the table “EMP_2”:

UPDATE EMP_2

SET PROJ_NUM = 14

WHERE EMP_HIREDATE < '1994-01-01' AND JOB_CODE >= 50...