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Oracle 1Z0-147 Exam Syllabus Topics:

Oracle9i program with pl/sql Sample Questions:

1. You create a DML trigger. For the timing information, which are valid with a DML trigger?

A) ON STATEMENT EXECUTION
B) IN PLACE OF
C) DURING
D) ON SHUTDOWN
E) BEFORE

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

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

3. Examine this function:
CREATE OR REPLACE FUNCTION CALC_PLAYER_AVG (V_ID in PLAYER_BAT_STAT.PLAYER_ID%TYPE) RETURN NUMBER IS V_AVG NUMBER; BEGIN SELECT HITS / AT_BATS INTO V_AVG FROM PLAYER_BAT_STAT WHERE PLAYER_ID = V_ID; RETURN (V_AVG); END; Which statement will successfully invoke this function in SQL *Plus?

A) CALC_PLAYER_AVG(31);
B) SELECT CALC_PLAYER_AVG(PLAYER_ID) FROM PLAYER_BAT_STAT;
C) START CALC_PLAYER_AVG(31)
D) CALC_PLAYER('RUTH');
E) EXECUTE CALC_PLAYER_AVG(31);

4. You disabled all triggers on the EMPLOYEES table to perform a data load. Now, you need to enable all triggers on the EMPLOYEES table. Which command accomplished this?

A) ALTER TRIGGERS ON TABLE employees ENABLE;
B) ALTER employees ENABLE ALL TRIGGERS;
C) You cannot enable multiple triggers on a table in one command.
D) ALTER TABLE employees ENABLE ALL TRIGGERS;

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

Solutions: