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IBM DB2 9 Family Fundamentals Sample Questions:

1. Application A currently holds an exclusive lock on a single row and application B tries to access that row. If lock timeout is set to -1 and both applications are using isolation level RS, which of the following will occur?

A) Application B will read the row and see uncommitted changes made by application A.
B) Applications A and B will cause a deadlock situation.
C) Application B will be placed in a lock-wait state until applicationA releases its lock.
D) Application B will read the previous version of the row.

2. How does DB2 protect the integrity of indexes when data is updated?

A) Locks are acquired on index keys.
B) Locks are acquired on the data.
C) Locks are acquired on index pages.
D) Locks are acquired on index pointers.

3. Given the following two tables:
TAB1
COL_1 COL_2
A 10 B 12 C 14
TAB2
COL_A COL_B
A 21 C 23 D 25
Assuming the following results are desired:
COL_1 COL_2 COL_A COL_B A 10 A 21 B 12 - C 14 C 23 - - D 25
Which of the following joins will produce the desired results?

A) SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON col_1 =col_a
B) SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON col_1 =col_a
C) SELECT * FROM tab1 INNER JOIN tab2 ON col_1 =col_a
D) SELECT * FROM tab1 FULL OUTER JOIN tab2 ON col_1 =col_a

4. A database named TEST_DB resides on a z/OS system and listens on port 446. The TCP/IP address for this system is 192.168.10.20 and the TCP/IP host name is MYHOST. Which of the following commands is required to make this database accessible to a Linux client?

A) CATALOG TCPIP NODEzos_srvr REMOTE myhost SERVER 446;
CATALOG DATABASE zos_db AS test_db AT NODE zos_srvr;
CATALOG DCS DATABASE zos_db AS test_db;
B) CATALOG TCPIP NODEzos_srvr REMOTE myhost SERVER 192.168.10.20;
CATALOG DCS DATABASE zos_db AS test_db AT NODE zos_srvr;
C) CATALOG TCPIP NODEzos_srvr REMOTE myhost SERVER 446;
CATALOG DCS DATABASE zos_db AS test_db AT NODE zos_srvr;
D) CATALOG TCPIP NODEzos_srvr REMOTE myhost SERVER 192.168.10.20;
CATALOG DATABASE zos_db AS test_db AT NODE zos_srvr;
CATALOG DCS DATABASE zos_db AS test_db;

5. Which of the following objects contains control structures that are considered the bound form of SQL statements?

A) UDT
B) Package
C) Access plan
D) Trigger

Solutions: