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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

1. When defining a referential constraint between the parent table T2 and the dependent table T1, which of the following is true?

A) The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1.
B) The list of column names in the FOREIGN KEY clause can be a subset of the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2.
C) The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T2 or a UNIQUE constraint that exists on T2.
D) The list of column names in the FOREIGN KEY clause must be identical to the list of column names in the primary key of T1 or a UNIQUE constraint that exists on T1.

2. Which of the following is the lowest cost DB2 product that can be legally installed on a Linux server that has 6 CPUs?

A) DB2 Personal Edition
B) DB2 Workgroup Server Edition
C) DB2 Express Edition
D) DB2Enterprise Server Edition

3. Given the following table:
STOCK
CATEGORY CHAR(1)
PARTNO CHAR(12)
DESCRIPTION VARCHAR(40)
QUANTITY INTEGER
PRICE DEC(7,2)
If items are indicated to be out of stock by setting DESCRIPTION to NULL and QUANTITY and
PRICE to zero, which of the following statements updates the STOCK table to indicate that all
items except those with CATEGORY of 'S' are temporarily out of stock?

A) UPDATE stock SET (description, quantity, price) = ('null', 0, 0) WHERE category 'S'
B) UPDATE stock SET description = 'NULL', quantity = 0, price = 0 WHERE category 'S'
C) UPDATE stock SET (description, quantity, price) = (NULL, 0, 0) WHERE category 'S'
D) UPDATE stock SET description = NULL, SET quantity = 0, SET price = 0 WHERE category 'S'

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

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

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

Solutions: