Let's suppose we are going to insert rows in the previously created table.
We can explicitly name the columns we are going to out values is and its order:
INSERT INTO EMPLOYEE (EMPNO, FIRSTNME, LASTNAME, SALARY)
VALUES ( '123456', 'Ali', 'Veli', 100000);
If we know the order and we are going to put values for all columns we can write:
INSERT INTO EMPLOYEE
VALUES ( '123456', 'Ali', 'Veli', 100000);
When using the db2clp, we need to put quotes because of the parenthesis (without semicolon at the end):
db2 "INSERT INTO EMPLOYEE (EMPNO, FIRSTNME, LASTNAME, SALARY)
VALUES ( '123456', 'Ali', 'Veli', 100000)"