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IBM DB2 9 Family Fundamentals Sample Questions:

1. Given the following table definitions:
TABLE1
ID INT NAME CHAR(30) PERSON INT CITIES INT TABLE2
ID INT
LASTNAME CHAR(30)
Which of the following statements will remove all rows in table TABLE1 that have matching
PERSONs in table TABLE2?

A) DELETE FROM table1 WHERE id IN (SELECT person FROM table2)
B) DELETE FROM table1 WHERE person IN (SELECT person FROM table2)
C) DELETE FROM table1 WHERE person IN (SELECT id FROM table2)
D) DELETE FROM table1 WHERE id IN (SELECT id FROM table2)

2. Which of the following DB2 data types does NOT have a fixed length?

A) DOUBLE
B) CHAR
C) INT
D) XML

3. Given the following table definitions:
DEPARTMENT
DEPTNO CHAR(3) DEPTNAME CHAR(30) MGRNO INTEGER ADMRDEPT CHAR(3)
EMPLOYEE
EMPNO INTEGER FIRSTNAME CHAR(30) MIDINIT CHAR LASTNAME CHAR(30) WORKDEPT CHAR(3)
Which of the following statements will list every employee number and last name, along with the employee number and last name of their manager, including employees that have not been assigned to a manager?

A) SELECTe.empno, e.lastname, m.empno, m.lastname FROM employee e RIGHT INNER JOIN department INNER JOIN employee m ON mgrno=m.empno ON e.workdept=deptno
B) SELECTe.empno, e.lastname, m.empno, m.lastname FROM employee e LEFT INNER JOIN department INNER JOIN employee m ON mgrno=m.empno ON e.workdept=deptno
C) SELECTe.empno, e.lastname, m.empno, m.lastname FROM employee e LEFT OUTER JOIN department INNER JOIN employee m ON mgrno=m.empno ON e.workdept=deptno
D) SELECTe.empno, e.lastname, m.empno, m.lastname FROM employee e RIGHT OUTER JOIN department INNER JOIN employee m ON mgrno=m.empno ON e.workdept=deptno

4. Given the following table definition:
EMPLOYESS
EMP ID INTEGER
NAME CHAR(20)
DEPT CHAR(10)
SALARY DECIMAL (10, 2)
COMMISSION DECIMAL (8, 2)
Assuming the DEPT column contains the values 'ADMIN', 'PRODUCTION', and 'SALES', which of
the following statements will produce a result data set in which all ADMIN department employees
are grouped together, all PRODUCTION department employees are grouped together, and all
SALES department employees are grouped together?

A) SELECT name, dept FROM employees GROUP BY CUBE (dept)
B) SELECT name, dept FROM employees GROUP BY dept
C) SELECT name, dept FROM employees GROUP BY ROLLUP (dept)
D) SELECT name, dept FROM employees ORDER BY dept

5. Which of the following DB2 data types CANNOT be used to create an identity column?

A) INTEGER
B) NUMERIC
C) DOUBLE
D) SMALLINT

Solutions: