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Oracle9i program with pl/sql Sample Questions:

1. Which two tables or views track object dependencies? (Choose two)

A) IDEPTREE
B) USER_DEPENDENCIES
C) USER_DEPENDS
D) USER_IDEPTREE
E) USER_DEPTREE

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

3. You have an AFTER UPDATE row-level on the table EMP. The trigger queries the EMP table and inserts the updating user's information into the AUDIT_TABLE.
What happens when the user updates rows on the EMP table?

A) A runtime error occurs. The update on the EMP table does not take place, but the insert into the AUDIT_TABLE occurs.
B) A runtime error occurs. The effect of trigger body and the triggering statement are rolled back.
C) A compile time error occurs.
D) The trigger fires successfully. The update on the EMP table occurs, and data is inserted into theAUDIT_TABLE table.
E) A runtime error occurs. The effect of trigger body is rolled back, but the update on the EMP table takes place.

4. Examine this package:
CREATE OR REPLACE PACKAGE pack_cur IS CURSOR c1 IS SELECT prodid FROM poduct ORDER BY prodid DESC; PROCEDURE proc1; PROCEDURE proc2; END pack_cur; /
CREATE OR REPLACE PACKAGE BODY pack_cur IS v_prodid NUMBER; PROCEDURE proc1 IS BEGIN OPEN c1;
LOOP
FETCH c1 INTO v_prodid;
DBMS_OUTPUT.PUT_LINE('Row is: ' || c1%ROWCOUNT);
EXIT WHEN c1%ROWCOUNT >= 3;
END LOOP;
END proc1;
PROCEDURE proc2 IS
BEGIN
LOOP
FETCH c1 INTO v_prodid;
DBMS_OUTPUT.PUT_LINE('Row is: ' ||c1%ROWCOUNT);
EXIT WHEN c1%ROWCOUNT >= 6;
END LOOP;
CLOSE c1;
END proc2;
END pack_cur;
/
The product table has more than 1000 rows. The SQL *Plus SERVEROUTPUT setting is turned
on in your session.
You execute the procedure PROC1 from SQL *Plus with the command:
EXECUTE pack_cur.proc1
What is the output in your session?

A) Row is: Row is: Row is:
B) Row is: 1 Row is: 2 Row is: 3
C) ERROR at line 1:
D) Row is: 4 Row is: 5 Row is: 6

5. Examine this package:
CREATE OR REPLACE PACKAGE discounts
IS
g_id NUMBER := 7829;
discount_rate NUMBER := 0.00;
PROCEDURE display_price (p_price NUMBER);
END discounts;
/
CREATE OR REPLACE PACKAGE BODY discounts
IS
PROCEDURE display_price (p_price NUMBER)
IS
BEGIN
DBMS_OUTPUT.PUT_LINE('Discounted '||
TO_CHAR(p_price*NVL(discount_rate, 1)));
END display_price;
BEGIN
discount_rate := 0.10;
END discounts;
/
Which statement is true?

A) The value of DISCOUNT_RATE is set to 1.00 each time the procedure DISPLAY_PRICE is invoked.
B) The value of DISCOUNT_RATE is set to 0.10 when the package is invoked for the first time in a session.
C) The value of DISCOUNT_RATE is set to 0.10 each time the package is invoked in a session.
D) The value of DISCOUNT_RATE always remains 0.00 in a session.

Solutions: