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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:
1. Which of the following describes the objects of a DB2 database and their relationships?
A) System catalog
B) Table space
C) Instance
D) Schema repository
2. Given the following two tables:
TAB1 C1 C2
A 11 B 12 C 13 TAB2 CX CY
A 21 C 22 D 23
The following results are desired:
C1 C2 CX CY A 11 A 21 C 13 C 22 -- -- D 23
Which of the following queries will yield the desired results?
A) SELECT * FROM tab1 RIGHT OUTER JOIN tab2 ON c1=cx
B) SELECT * FROM tab1 LEFT OUTER JOIN tab2 ON c1=cx
C) SELECT * FROM tab1 INNER JOIN tab2 ON c1=cx
D) SELECT * FROM tab1 FULL OUTER JOIN tab2 ON c1=cx
3. Which of the following best describes a unit of work?
A) It is a recoverable sequence of operations whose point of consistency is established when an executable SQL statement is processed after a connection to a database has been established or a previous transaction has been terminated.
B) It is a recoverable sequence of operations whose point of consistency is only established if a mechanism known as asavepoint is created.
C) It is a recoverable sequence of operations whose current point of consistency can be determined by querying the system catalog tables.
D) It is a recoverable sequence of operations whose point of consistency is established when a connection to a database has been established or when a mechanism known as asavepoint is created.
4. In which situation is shredding XML data recommended?
A) When the data is of low volume and requires a complex star-schema topology
B) When the data is naturally tabular
C) When the data by nature has sparse attributes
D) When thenumber of nodes are volatile
5. Which of the following statements allows BOB to revoke access to the SAMPLE database from user TOM?
A) REVOKE CONNECT ON DATABASE FROM USER tom
B) REVOKE ACCESS ON DATABASE FROM USER bob
C) REVOKE tom FROM CONNECT ON DATABASE BY USER bob
D) REVOKE tom FROM ACCESS ON DATABASE BY USER bob
Solutions:
Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: A |