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Oracle9i program with pl/sql Sample Questions:

1. You need to remove the database triggerBUSINESS_HOUR.Which command do you use to remove the trigger in the SQL *Plus environment?

A) REMOVE TRIGGER business_hour;
B) ALTER TRIGGER business_hour REMOVE;
C) DELETE FROM USER_TRIGGERS
WHERE TRIGGER_NAME = 'BUSINESS_HOUR';
D) DELETE TRIGGER business_hour;
E) DROP TRIGGER business_hour;

2. Examine this code:
CREATE OR REPLACE TRIGGER update_emp
AFTER UPDATE ON emp
BEGIN
INSERT INTO audit_table (who, dated)
VALUES (USER, SYSDATE);
END;
You issue an UPDATE command in the EMP table that results in changing 10 rows.
How many rows are inserted into the AUDIT_TABLE?

A) A value equal to the number of rows in the EMP table.
B) 10
C) None
D) 1

3. An internal LOB is _____.

A) A table.
B) A column that is a primary key.
C) Stored in the database.
D) A file stored outside of the database, with an internal pointer to it from a database column.

4. What is a condition predicate in a DML trigger?

A) A conditional predicate allows you to combine several DBM triggering events into one in the trigger body.
B) A conditional predicate allows you to specify a WHEN-LOGGING-ON condition in the trigger body.
C) A conditional predicate means you use the NEW and OLD qualifiers in the trigger body as a condition.
D) A conditional predicate allows you to specify a SHUTDOWN or STARTUP condition in the trigger body.

5. Examine this code:
CREATE OR REPLACE PROCEDURE set_bonus
(p_cutoff IN VARCHAR2 DEFAULT 'WEEKLY'
p_employee_id IN employees_employee_id%TYPE
p_salary IN employees_salary%TYPE,
p_bonus_percent IN OUT NUMBER DEFAULT 1.5,
p_margin OUT NUMBER DEFAULT 2,
p_bonus_value OUT NUMBER)
IS
BEGIN UPDATE emp_bonus SET bonus_amount =(p_salary * p_bonus_percent)/p_margin WHERE employee_id = p_employee_id; END set_bonus; /
You execute the CREATE PROCEDURE statement above and notice that it fails. What are two reasons why it fails? (Choose two)

A) You cannot update a table using a stored procedure.
B) The format parameter p_bonus_value is declared but is not used anywhere.
C) The formal parameter p_cutoff cannot have a DEFAULT clause.
D) The syntax of the UPDATE statement is incorrect.
E) The declaration of the format parameter p_bonus_percent cannot have a DEFAULT clause.
F) The declaration of the format parameter p_margin cannot have a DEFAULT clause.

Solutions: