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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. Which statement about triggers is true?

A) You use a database trigger to fire when an INSERT statement occurs.
B) You use a system event trigger to fire when an UPDATE statement occurs.
C) You use INSTEAD OF trigger to fire when a SELECT statement occurs.
D) You use an application trigger to fire when a DELETE statement occurs.

2. Examine this code:
CREATE OR REPLACE PROCEDURE audit_action (p_who VARCHAR2) AS BEGIN INSERT INTO audit(schema_user) VALUES(p_who); END audit_action; /
CREATE OR REPLACE TRIGGER watch_it AFTER LOGON ON DATABASE CALL audit_action(ora_login_user) / What does this trigger do?

A) The trigger invoked the procedure audit_action each time a user logs on to his/her schema and adds the username to the audit table.
B) The trigger marks the user as logged on to the database before an audit statement is issued.
C) The trigger records an audit trail when a user makes changes to the database.
D) The trigger invokes the procedure audit_action each time a user logs on to the database and adds the username to the audit table.

3. Consider this scenario
A procedure X references a view Y that is based on a table Z .
Which two statements are true? (Choose two.)

A) Y is an indirect dependent of X
B) Y is a direct dependent of X
C) Z is an indirect dependent of Y
D) Y is an indirect dependent of Z
E) Z is a direct dependent of X
F) Y is a referenced object

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

5. Examine this code:
CREATE OR REPLACE PACKAGE bonus
IS
g_max_bonus NUMBER := .99;
FUNCTION calc_bonus (p_emp_id NUMBER)
RETURN NUMBER;
FUNCTION calc_salary (p_emp_id NUMBER)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY bonus
IS v_salary employees.salary%TYPE; v_bonus employees.commission_pct%TYPE; FUNCTION calc_bonus (p_emp_id NUMBER) RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employee_id = p_emp_id; RETURN v_bonus * v_salary; END calc_bonus FUNCTION calc_salary (p_emp_id NUMBER) RETURN NUMBER IS BEGIN SELECT salary, commission_pct INTO v_salary, v_bonus FROM employees WHERE employees RETURN v_bonus * v_salary + v_salary; END cacl_salary; END bonus; / Which statement is true?

A) You can call the BONUS.CALC_SALARY packaged function from an INSERT command against the EMPLOYEES table.
B) You can call the BONUS.CALC_SALARY packaged function form a DELETE command against the EMPLOYEES table.
C) You can call the BONUS.CALC_SALARY packaged function from a SELECT command against the EMPLOYEES table.
D) You can call the BONUS.CALC_SALARY packaged function from an UPDATE command against the EMPLOYEES table.

Solutions: