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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

1. Which of the following is NOT a characteristic of a data warehouse?

A) Sub-second response time
B) Summarized queries that perform aggregations and joins
C) Voluminous historical data
D) Heterogeneous data sources

2. An Alias can be an alternate name for which DB2 object?

A) Schema
B) View
C) Sequence
D) Trigger

3. A "trusted" client needs to communicate with a server that has been configured to use CLIENT authentication. Which of the following will be used to verify passwords?

A) Client applications
B) User ID/password file
C) Operating system
D) Communications layer

4. Given the following two tables:
TAB1 R1
A A A B B C C D E TAB2 R2
A A B B C C D Which of the following queries returns the following result set?
RETVAL
E

A) SELECT r1 ASretval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2
B) SELECT DISTINCT r1 ASretval FROM tab1, tab2 WHERE r1 <> r2
C) SELECT r1 ASretval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2
D) SELECT r1 ASretval FROM tab1 UNION SELECT r2 AS retval FROM tab2

5. Given the following CREATE TABLE statement:
CREATE TABLE EMPLOYEE
(EMPNO CHAR(3) NOT NULL,
FIRSTNAME CHAR(20) NOT NULL,
MIDINIT CHAR(1),
LASTNAME CHAR(20) NOT NULL,
SALARY DECIMAL(10, 2))
Which of the following will retrieve the rows that have a missing value in the MIDINIT column?

A) SELECT * FROM employee WHEREmidinit = " "
B) SELECT * FROM employee WHEREmidinit IS NULL
C) SELECT * FROM employee WHEREmidinit = ' '
D) SELECT * FROM employee WHEREmidinit = NULL

Solutions: