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IBM C2090-730 Exam Syllabus Topics:

IBM DB2 9 Family Fundamentals Sample Questions:

1. Which of the following best describes the lock protection provided by DB2 for the current row of a cursor?

A) The row is protected from updates and deletes by the current application and from positioned updates and deletes that reference another cursor of the same application
B) The row is only protected from positioned updates and deletes that reference another cursor of the same application.
C) The cursor is protected from positioned updates and deletes that reference another cursor of a different application.
D) The cursor is only protected from updates and deletes by concurrent applications.

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

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

3. Given the following query:
SELECT quantity,
CASE WHEN itemcode = '099' THEN 'SILVER'
WHEN itemcode = '788' THEN 'GOLD'
WHEN itemcode = '899' THEN 'PLATINUM'
ELSE 'ERROR'
END
FROM supplier
What will be the result of the query if the following data is evaluated by the CASE expression?
SUPPLIER
QUANTITY ITEMCODE 3 099 4 099 1 788 1 899 5 009 3 788 1 899

A) 3,SILVER 4,SILVER 1,GOLD 1,PLATINUM 5,ERROR 3,GOLD 1,PLATINUM
B) 3,SILVER 4,GOLD 1,SILVER 1,GOLD 5,PLATINUM 3,SILVER 1,GOLD
C) 3,SILVER 4,SILVER 1,PLATINUM 1,ERROR 5,SILVER 3,GOLD 1,PLATINUM
D) 3,SILVER 4,SILVER 1,GOLD 1,GOLD 5,SILVER 3,ERROR 1,PLATINUM

4. If application A issues the following SQL statement, which of the following statements about concurrency is true?
SELECT deptno, deptname, mgrno FROM dept WHERE admrdept = 'A00' FOR READ ONLY WITH RS

A) Rows accessed by application A cannot be seen by other applications.
B) Results produced by re-execution of the statement by application A will not be affected by other applications.
C) Rows accessed by application A can be seen by other applications.
D) Application A can see uncommitted changes made by other applications.

5. If the following SQL statements are executed:
CREATE TABLE make (makeid SMALLINT NOT NULL PRIMARY KEY,
make VARCHAR(25));
CREATE TABLE model (modelid SMALLINT,
model VARCHAR(25),
makeid SMALLINT,
CONSTRAINT const1 FOREIGN KEY (makeid)
REFERENCES make(makeid) ON DELETE RESTRICT);
And each table created is populated as follows:
MAKE
MAKEID MAKE
1 Ford 2 Chevrolet 3 Toyota
MODEL
MODELID MODEL MAKEID
1 Mustang 1 2 Escort 1 3 Malibu 2 4 Camry 3
If the following SQL statement is executed:
DELETE FROM make WHERE makeid = 1
What is the total number of rows that will be deleted?

A) 0
B) 1
C) 2
D) 3

Solutions: