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Oracle9i program with pl/sql Sample Questions:

1. Examine this code:
CREATE OR REPLACE TRIGGER secure_emp BEFORE LOGON ON employees BEGIN IF (TO_CHAR(SYSDATE, 'DY') IN ('SAT', 'SUN')) OR (TO_CHAR(SYSDATE, 'HH24:MI') NOT BETWEEN '08:00' AND '18:00') THEN RAISE_APPLICATION_ERROR (-20500, 'You may insert into the EMPLOYEES table only during business hours.'); END IF; END; / What type of trigger is it?

A) DML trigger
B) This is an invalid trigger.
C) Application trigger
D) INSTEAD OF trigger
E) System event trigger

2. Examine this code:
CREATE OR REPLACE PACKAGE comm_package
IS
g_comm NUMBER := 10;
PROCEDURE reset_comm(p_comm IN NUMBER);
END comm_package;
/
User Jones executes the following code at 9:01am: EXECUTE comm_package.g_comm := 15
User Smith executes the following code at 9:05am: EXECUTE comm_paclage.g_comm := 20
Which statement is true?

A) g_comm has a value of 10 at 9:03am for both Jones and Smith
B) g_comm has a value of 20 at 9:06am for both Jones and Smith.
C) g_comm has a value of 10 at 9:06am for both Jones and Smith.
D) g_comm has a value of 15 at 9:06am for Smith.
E) g_comm has a value of 15 at 9:06am for Jones.
F) g_comm has a value of 15 at 9:03 am for both Jones and Smith.

3. 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 a SELECT 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 an UPDATE command against the EMPLOYEES table.
D) You can call the BONUS.CALC_SALARY packaged function from an INSERT command against the EMPLOYEES table.

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

5. Which command must you issue to allow users to access the UPD_TEAM_STAT trigger on the TEAM table?

A) GRANT SELECT,INSERT,UPDATE,DELETE ON UPD_TEAM_STAT TO PUBLIC;
B) GRANT EXECUTE ON TEAM TO PUBLIC
C) GRANT SELECT,INSERT,UPDATE,DELETE ON TEAM TO PUBLIC;
D) GRANT SELECT, EXECUTE ON TEAM, UPD_TEAM_STAT TO PUBLIC;

Solutions: