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Oracle9i program with pl/sql Sample Questions:

1. Which view displays indirect dependencies, indenting each dependency?

A) DEPTREE
B) INDENT_TREE
C) I_DEPT_TREE
D) IDEPTREE

2. Which code can you use to ensure that the salary is not increased by more than 10% at a time nor is it ever decreased?

A) CREATE OR REPLACE TRIGGER check_sal
AFTER UPDATE OR sal ON emp
WHEN (new.sal < old.sal OR
-new.sal > old.sal * 1.1)
BEGIN
RAISE_APPLICATION_ERROR ( - 20508, 'Do not decrease
salary not increase by more than 10%');
END;
B) CREATE OR REPLACE TRIGGER check_sal
BEFORE UPDATE OF sal ON emp
WHEN (new.sal < old.sal OR
new.sal > old.sal * 1.1)
BEGIN
RAISE_APPLICATION_ERROR ( - 20508, 'Do not decrease
salary not increase by more than 10%');
END;
C) ALTER TABLE emp ADD
CONSTRAINT ck_sal CHECK (sal BETWEEN sal AND sal*1.1);
D) CREATE OR REPLACE TRIGGER check_sal
BEFORE UPDATE OF sal ON emp
FOR EACH ROW
WHEN (new.sal < old.sal OR
new.sal > old.sal * 1.1)
BEGIN
RAISE_APPLICATION_ERROR ( - 20508, 'Do not decrease
salary not increase by more than 10%');
END;

3. Examine this code:
CREATE OR REPLACE PROCEDURE set_bonus
(p_cutoff IN VARCHAR2 DEFAULT 'WEEKLY'
p_employee_id IN employees_employee_id%TYPE
p_salary IN employees_salary%TYPE,
p_bonus_percent IN OUT NUMBER DEFAULT 1.5,
p_margin OUT NUMBER DEFAULT 2,
p_bonus_value OUT NUMBER)
IS
BEGIN UPDATE emp_bonus SET bonus_amount =(p_salary * p_bonus_percent)/p_margin WHERE employee_id = p_employee_id; END set_bonus; /
You execute the CREATE PROCEDURE statement above and notice that it fails. What are two reasons why it fails? (Choose two)

A) You cannot update a table using a stored procedure.
B) The syntax of the UPDATE statement is incorrect.
C) The declaration of the format parameter p_bonus_percent cannot have a DEFAULT clause.
D) The format parameter p_bonus_value is declared but is not used anywhere.
E) The formal parameter p_cutoff cannot have a DEFAULT clause.
F) The declaration of the format parameter p_margin cannot have a DEFAULT clause.

4. Examine this code
CREATE OR REPLACE PROCEDURE load bfile (p_flle_loc IN VARCHAR2)
IS
V_file BFILE;
V_filename VARCHAR2 (16);
CURSOR emp_cursor IS
SELECT employee_id
FROM employees
WHERE Job_id = 'IT_PROG'
FOR UPDATE;
BEGIN
FOR emp_record IN emp_cursor LOOP
V_filename:= emp_record.employee_id || '.GIF';
V_file := BFILENAME(p_flle_loc, v_filename);
END LOOP;
END;
/
What does the BFILENAME function do?

A) It returns a BFILE locator that is associated with a physical LOB binary file on the server's file system
B) It creates a directory object for use with the external BFILEs
C) It checks for the existence of an external BFILE
D) It reads data from an external BFILE

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

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

Solutions: