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IBM Assessment: DB2 9 Family Fundamentals Sample Questions:

1. Given the following two tables:
NAMES
NAME NUMBER
Wayne Gretzky 99 Jaromir Jagr 68 Bobby Orr 4 Bobby Hull 23 Brett Hull 16 Mario Lemieux 66 Mark Messier 11
POINTS
NAME POINTS
Wayne Gretzky 244 Jaromir Jagr 168 Bobby Orr 129 Brett Hull 121 Mario Lemieux 189 Joe Sakic 94
Which of the following statements will display the player name, number, and points for all players that have scored points?

A) SELECT p.name,n.number, p.points FROM names n FULL OUTER JOIN points p ON n.name = p.name
B) SELECT p.name,n.number, p.points FROM names n INNER JOIN points p ON n.name = p.name
C) SELECT p.name,n.number, p.points FROM names n RIGHT OUTER JOIN points p ON n.name = p.name
D) SELECT p.name,n.number, p.points FROM names n LEFT OUTER JOIN points p ON n.name = p.name

2. Given the following table definitions:
EMPLOYEES
EMPID INTEGER
NAME CHAR(20)
DEPTID CHAR(3)
SALARY DECIMAL(10,2)
COMMISSION DECIMAL(8,2)
DEPARTMENTS
DEPTNO INTEGER DEPTNAME CHAR(20)
Which of the following statements will produce a result data set that satisfies all of these conditions:
> Displays the total number of employees in each department >> Displays the corresponding department name for each department ID >> Sorted by department employee count, from greatest to least

A) SELECTdeptname, COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 ASC
B) SELECT *,COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 DESC
C) SELECTdeptname, COUNT(*) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2
D) SELECTdeptname, COUNT(empno) FROM departments, employees WHERE deptid = deptno GROUP BY deptname ORDER BY 2 DESC

3. Given the following data:
TAB1
C1 C2
200 abc 250 abc 150 def 300 ghi 175 def
If the following query is executed:
WITH subset (col1, col2) AS (SELECT c1, c2 FROM tab1 WHERE c1 > 150) SELECT col2, SUM(col1) AS col1_sum FROM subset GROUP BY col2 ORDER BY col2
Which of the following result data sets will be produced?

A) COL2 COL1_SUM
abc 450 abc 450 def 175 def 175 ghi 300 5 record(s) selected.
B) COL2 COL1_SUM
abc 200 abc 250 def 175 ghi 300 4 record(s) selected.
C) COL2 COL1_SUM
abc 450 def 325 ghi 300 3 record(s) selected.
D) COL2 COL1_SUM
abc 450 def 175
ghi 300
3 record(s) selected.

4. Given the following function:
CREATE FUNCTION emplist () RETURNS TABLE ( id CHAR(6) , firstname VARCHAR(12) , lastname VARCHAR(15) ) LANGUAGE SQL BEGIN ATOMIC RETURN SELECT EMPNO, FIRSTNME, LASTNAME FROM EMPLOYEE WHERE WORKDEPT IN ('A00', 'B00'); END
How can this function be used in an SQL statement?

A) SELECT id,firstname, lastname FROM TABLE(EMPLIST()) AS t
B) SELECTTABLE(EMPLIST()) AS t FROM EMPLOYEE
C) SELECTTABLE(EMPLIST()) FROM EMPLOYEE
D) SELECTEMPLIST(id, firstname, lastname) FROM EMPLOYEE

5. If the following SQL statement is executed:
CREATE TABLE sales
(invoice_no NOT NULL PRIMARY KEY,
sales_date DATE,
sales_amt NUMERIC(7,2))
IN tbsp0, tbsp1, tbsp2, tbsp3
PARTITION BY RANGE (sales_date NULLS FIRST)
(STARTING '1/1/2007' ENDING '12/31/2007'
EVERY 3 MONTHS)
Which of the following statements is true?

A) When resolving queries against the SALES table, each partition used is scanned asynchronously and the results of each partition scan are merged to produce the result data set returned
B) Data can be quickly rolled in and out of the SALES table by using the ATTACH PARTITION and DETACH PARTITION clauses of the ALTER TABLE statement
C) If an index is created for the SALES table, its data must be stored in table space TBSP0
D) Administrative tasks such as backing up, restoring, and reorganizing data stored in the SALES table must be done at the table level; not at the partition level

Solutions: