IBM C2090-730 : DB2 9 Family Fundamentals

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IBM DB2 9 Family Fundamentals Sample Questions:

1. Given the following table definition:
SALES
INVOICE_NO CHAR(20) NOT NULL
SALES_DATE DATE
SALES_PERSON VARCHAR(25)
REGION CHAR(20)
SALES_AMT DECIMAL(9,2)
Which of the following queries will return SALES information, sorted by SALES_PERSON, from A
to Z, and SALES_DATE, from most recent to earliest?

A) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales SORT BY sales_person DESC, sales_date
B) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales ORDER BY sales_person, sales_date DESC
C) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales ORDER BY sales_person DESC, sales_date
D) SELECTinvoice_no, sales_person, sales_date, sales_amt FROM sales SORT BY sales_person, sales_date DESC

2. Application A is running under the Repeatable Read isolation level and holds an Update lock on table TAB1. Application B wants to query table TAB1 and cannot wait for Application A to release its lock. Which isolation level should Application B run under to achieve this objective?

A) Repeatable Read
B) Read Stability
C) Uncommitted Read
D) Cursor Stability

3. Which of the following is a characteristic of a sequence?

A) When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries.
B) A sequence will never generate duplicate values.
C) It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero.
D) The MAXVALUE of a sequence can be equal to the MINVALUE.

4. Assuming table TAB1 contains 100 rows, which of the following queries will return only half of the rows available?

A) SELECT * FROM tab1 MAXROWS 50
B) SELECT * FROM tab1 FIND FIRST 50 ROWS
C) SELECT * FROM tab1 WHILE ROW_NUM < 50
D) SELECT * FROM tab1 FETCH FIRST 50 ROWS ONLY

5. Given the following CREATE TABLE statement:
CREATE TABLE EMPLOYEE
(EMPNO CHAR(3) NOT NULL,
FIRSTNAME CHAR(20) NOT NULL,
MIDINIT CHAR(1),
LASTNAME CHAR(20) NOT NULL,
SALARY DECIMAL(10, 2))
Which of the following will retrieve the rows that have a missing value in the MIDINIT column?

A) SELECT * FROM employee WHEREmidinit = " "
B) SELECT * FROM employee WHEREmidinit IS NULL
C) SELECT * FROM employee WHEREmidinit = ' '
D) SELECT * FROM employee WHEREmidinit = NULL

Solutions: