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

2. You create a DML trigger. For the timing information, which is valid with a DML trigger?

A) INSTEAD
B) DURING
C) BEFORE
D) ON STATEMENT EXECUTION
E) ON SHUTDOWN

3. Examine this code:
CREATE OR REPLACE STORED FUNCTION get_sal
(p_raise_amt NUMBER, p_employee_id employees.employee_id%TYPE)
RETURN NUMBER
IS
v_salary NUMBER;
v_raise NUMBER(8,2);
BEGIN
SELECT salary
INTO v_salary
FROM employees
WHERE employee_id = p_employee_id;
v_raise := p_raise_amt * v_salary;
RETURN v_raise;
END;
Which statement is true?

A) This statement creates a stored procedure named get_sal.
B) This statement fails.
C) This statement creates a stored function named get_sal.
D) This statement returns a raise amount based on an employee id.
E) This statement creates a stored function named get_sal with a status of invalid.

4. A CALL statement inside the trigger body enables you to call ______.

A) A stored procedure.
B) A stored function.
C) A package.
D) Another database trigger.

5. When creating stored procedures and functions, which construct allows you to transfer values to and from the calling environment?

A) Boolean variables
B) Substitution variables
C) arguments
D) local variables

Solutions: