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Oracle9i program with pl/sql Sample Questions:

1. 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) CALC_PLAYER_AVG(31);
C) START CALC_PLAYER_AVG(31)
D) EXECUTE CALC_PLAYER_AVG(31);
E) CALC_PLAYER('RUTH');

2. The add_player, upd_player_stat, and upd_pitcher_stat procedures are grouped together in a package. A variable must be shared among only these procedures.
Where should you declare this variable?

A) In the package specification.
B) In a database trigger.
C) In the package body.
D) In each procedure's DECLARE section, using the exact same name in each.

3. Which two program declarations are correct for a stored program unit? (Choose two)

A) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER, p_amount OUT NUMBER(10, 2))
B) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER, p_amount OUT NUMBER)
C) CREATE OR REPLACE PROCEDURE tax_amt
(p_id NUMBER)
RETURN NUMBER
D) CREATE OR REPLACE FUNCTION tax_amt
(p_id NUMBER)
RETURN NUMBER
E) CREATE OR REPLACE FUNCTION tax_amt
(p_id NUMBER)
RETURN NUMBER(10,2)

4. Examine this code:
CREATE OR REPLACE PACKAGE metric_converter
IS
c_height CONSTRAINT NUMBER := 2.54;
c_weight CONSTRAINT NUMBER := .454;
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER;
END;
/
CREATE OR REPLACE PACKAGE BODY metric_converter
IS
FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * c_height;
END calc_height;
FUNCTION calc_weight (p_weight_in_pounds NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_weight_in_pounds * c_weight
END calc_weight
END metric_converter;
/
CREATE OR REPLACE FUNCTION calc_height (p_height_in_inches NUMBER)
RETURN NUMBER
IS
BEGIN
RETURN p_height_in_inches * metric_converter.c_height;
END calc_height;
/
Which statement is true?

A) The stand alone function CALC_HEIGHT cannot be created because its name is used in a packaged function.
B) If you remove the package specification, then the package body is removed.
C) If you remove the stand alone stored function CALC_HEIGHT, then the METRIC_CONVERTER package body and the package specification are removed.
D) If you remove the package body, then the package specification is removed.
E) If you remove the package specification, then the package body and the stand alone stored function CALC_HEIGHT are removed.
F) If you remove the package body, then the package specification and the stand alone stored function CALC_HEIGHT are removed.

5. You need to create a trigger to ensure that information in the EMP table is only modified during business hours, Monday to Friday from 9:00am to 500pm Which types of trigger do you create? (Choose two.)

A) row level AFTER INSERT OR UPDATE OR DELETE ON EMP
B) statement level BEFORE INSERT OR UPDATE OR DELETE ON EMP
C) row level BEFORE INSERT OR UPDATE OR DELETE ON EMP
D) statement level AFTER INSERT OR UPDATE OR DELETE ON EMP

Solutions: