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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. You need to disable all triggers on the EMPLOYEES table.Which command accomplishes this?

A) None of these commands; you cannot disable multiple triggers on a table in one command.
B) ALTER TRIGGERS ON TABLE employees DISABLE;
C) ALTER employees DISABLE ALL TRIGGERS;
D) ALTER TABLE employees DISABLE ALL TRIGGERS;

2. You have a row level BEFORE UPDATE trigger on the EMP table. This trigger contains a SELECT statement on the EMP table to ensure that the new salary value falls within the minimum and maximum salary for a given job title.
What happens when you try to update a salary value in the EMP table?

A) The trigger fails because you cannot use the minimum and maximum functions in a BEFORE UPDATE trigger.
B) The trigger fires successfully.
C) The trigger fails because a SELECT statement on the table being updated is not allowed.
D) The trigger fails because it needs to be a row level AFTER UPDATE trigger.

3. Which two does the INSTEAD OF clause in a trigger identify? (Choose two)

A) The table associated with the trigger.
B) The statement level or for each row association to the trigger.
C) The event associated with the trigger.
D) The package associated with the trigger.
E) The view associated with the trigger.

4. Which statements are true? (Choose all that apply)

A) If errors occur during the compilation of a trigger you can use the SHOW ERRORS command within iSQL *Plus to see the compilation errors.
B) If errors occur during the compilation of a trigger, the trigger is still created.
C) If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_ERRORS data dictionary view to see compilation errors.
D) If errors occur during the compilation of a trigger you can go into SQL *Plus and query the USER_TRIGGERS data dictionary view to see the compilation errors.

5. Examine this package:
CREATE OR REPLACE PACKAGE manage_emps
IS
tax_rate CONSTANT NUMBER(5,2) := .28;
v_id NUMBER;
PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER);
PROCEDURE delete_emp;
PROCEDURE update_emp;
FUNCTION calc_tax (p_sal NUMBER)
RETURN NUMBER;
END manage_emps;
/
CREATE OR REPLACE PACKAGE BODY manage_emps
IS
PROCEDURE update_sal
(p_raise_amt NUMBER)
IS
BEGIN UPDATE emp SET sal = (sal * p_raise_emt) + sal WHERE empno = v_id; END; PROCEDURE insert_emp (p_deptno NUMBER, p_sal NUMBER) IS BEGIN INSERT INTO emp(empno, deptno, sal) VALYES(v_id, p_depntno, p_sal); END insert_emp; PROCEDURE delete_emp IS BEGIN DELETE FROM emp WHERE empno = v_id; END delete_emp; PROCEDURE update_emp IS v_sal NUMBER(10, 2); v_raise NUMBER(10, 2); BEGIN SELECT sal INTO v_sal FROM emp WHERE empno = v_id; IF v_sal < 500 THEN v_raise := .05; ELSIP v_sal < 1000 THEN v_raise := .07; ELSE v_raise := .04; END IF; update_sal(v_raise); END update_emp; FUNCTION calc_tax (p_sal NUMBER) RETURN NUMBER IS BEGIN RETURN p_sal * tax_rate;
END calc_tax;
END manage_emps;
/
How many public procedures are in the MANAGE_EMPS package?

A) One
B) Four
C) Five
D) Two
E) Three

Solutions: