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IBM DB2 9 Family Fundamentals Sample Questions:

1. Which of the following provides a logical grouping of database objects?

A) Schema
B) View
C) Buffer pool
D) Table

2. Given the following set of statements:
CREATE TABLE tab1 (col1 INTEGER, col2 CHAR(20));
COMMIT;
INSERT INTO tab1 VALUES (123, 'Red');
INSERT INTO tab1 VALUES (456, 'Yellow');
SAVEPOINT s1 ON ROLLBACK RETAIN CURSORS;
DELETE FROM tab1 WHERE col1 = 123;
INSERT INTO tab1 VALUES (789, 'Blue');
ROLLBACK TO SAVEPOINT s1;
INSERT INTO tab1 VALUES (789, 'Green');
UPDATE tab1 SET col2 = NULL WHERE col1 = 789; COMMIT;
Which of the following records would be returned by the following statement?
SELECT * FROM tab1

A) COL1 COL2
123 Red 456 Yellow 789 Green 3 record(s) selected.
B) COL1 COL2
123 Red 456 Yellow 789 3 record(s) selected.
C) COL1 COL2
456 Yellow 1 record(s) selected.
D) COL1 COL2
123 Red 456 Yellow 2 record(s) selected.

3. The following triggers were defined for a table named SALES in the order shown:
CREATE TRIGGER trigger_a NO CASCADE BEFORE UPDATE ON sales REFERENCING NEW AS new FOR EACH ROW SET new.commission = sale_amt * .05 WHERE invoice = n.invoice;
CREATE TRIGGER trigger_b AFTER INSERT ON sales REFERENCING NEW AS new FOR EACH ROW UPDATE sales SET bill_date = CURRENT DATE + 30 DAYS WHERE invoice = n.invoice;
CREATE TRIGGER trigger_c NO CASCADE BEFORE DELETE ON sales FOR EACH ROW SIGNAL SQLSTATE '75005' SET MESSAGE_TEXT = 'Deletes not allowed!';
Which of the following statements is NOT true?

A) Each time a row is inserted into the SALES table, trigger TRIGGER_A is fired first, followed by trigger TRIGGER_B
B) Once a row has been added to the SALES table, it cannot be removed
C) Whenever a row in the SALES table is updated, all three triggers are fired but nothing happens because none of the triggers have been coded to trap update operations
D) Whenever a row is inserted into the SALES table, the value in the BILL_DATE column is automatically set to 30 days from today

4. Which of the following is the best statement to use to create a user-defined data type that can be used to store currency values?

A) CREATE DISTINCT TYPE currency AS SMALLINT
B) CREATE DISTINCT TYPE currency ASNUMERIC(7,2)
C) CREATE DISTINCT TYPE currency AS DOUBLE
D) CREATE DISTINCT TYPE currency AS BIGINT

5. Given the requirements to store customer names, billing addresses, and telephone numbers, which of the following would be the best way to define the telephone number column for a table if all customers were located in the same country?

A) PHONE CHAR(15)
B) PHONE LONG VARCHAR
C) PHONE CLOB(1K)
D) PHONE VARCHAR(15)

Solutions: