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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

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

2. Which two of the following are optional and do not have to be specified when creating a table?

A) NOT NULL constraint
B) Table name
C) Default constraint
D) Column name
E) Column data type

3. Which of the following statements allows BOB to revoke access to the SAMPLE database from user TOM?

A) REVOKE ACCESS ON DATABASE FROM USER bob
B) REVOKE tom FROM CONNECT ON DATABASE BY USER bob
C) REVOKE CONNECT ON DATABASE FROM USER tom
D) REVOKE tom FROM ACCESS ON DATABASE BY USER bob

4. Which of the following tools can NOT be used to catalog a database?

A) Command Line Processor
B) Control Center
C) Configuration Assistant
D) SQL Assist

5. If the following SQL statements are executed:
CREATE TABLE make (makeid SMALLINT NOT NULL PRIMARY KEY,
make VARCHAR(25));
CREATE TABLE model (modelid SMALLINT,
model VARCHAR(25),
makeid SMALLINT,
CONSTRAINT const1 FOREIGN KEY (makeid)
REFERENCES make(makeid) ON DELETE RESTRICT);
And each table created is populated as follows:
MAKE
MAKEID MAKE
1 Ford 2 Chevrolet 3 Toyota
MODEL
MODELID MODEL MAKEID
1 Mustang 1 2 Escort 1 3 Malibu 2 4 Camry 3
If the following SQL statement is executed:
DELETE FROM make WHERE makeid = 1
What is the total number of rows that will be deleted?

A) 3
B) 0
C) 1
D) 2

Solutions: