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

2. Which of the following products is used to shred extensible markup language documents?

A) DB2 AVI Extender
B) DB2 Spatial Extender
C) DB2 Text Extender
D) DB2 XML Extender

3. Which of the following actions may cause a trigger to be fired?

A) ALTER
B) DELETE
C) ROLLBACK
D) DROP

4. Given that tables T1 and T2 contain the following rows:
Table T1: C1 C2
1 4 1 3 1 2 Table T2: C1 C2
1 1 1 2 1 3
Which of the following queries will return only those rows that exist in both T1 and T2?

A) SELECT * FROM t1 INTERSECT SELECT * FROM t2
B) SELECT * FROM t1 WHERE (c1,c2)= (SELECT c1,c2 FROM t2)
C) SELECT * FROM t1 UNION DISTINCT SELECT * FROM t2
D) SELECT * FROM t1 UNION SELECT * FROM t2

5. Which of the following is NOT true about schemas?

A) A schema enables the creation of multiple objects in a database without encountering namespace collisions
B) If a schema name is not specified, either by qualifying a database object name or by executing the SET CURRENT SCHEMA statement, the authorization ID of the current session user is used as the schema name by default
C) When most database objects are created, they are either implicitly or explicitly assigned to a schema
D) The value assigned to the CURRENT SCHEMA special register is persistent across database restarts

Solutions: