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Oracle9i program with pl/sql Sample Questions:

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

2. What is a condition predicate in a DML trigger?

A) A conditional predicate allows you to combine several DBM triggering events into one in the trigger body.
B) A conditional predicate means you use the NEW and OLD qualifiers in the trigger body as a condition.
C) A conditional predicate allows you to specify a WHEN-LOGGING-ON condition in the trigger body.
D) A conditional predicate allows you to specify a SHUTDOWN or STARTUP condition in the trigger body.

3. You are about to change the arguments of the CALC_TEAM_AVG function.
Which dictionary view can you query to determine the names of the procedures and functions that
invoke the CALC_TEAM_AVG function?

A) USER_PROC_DEPENDS
B) USER_REFERENCES
C) USER_DEPENDENCIES
D) USER_SOURCE

4. Examine this code:
CREATE OR REPLACE FUNCTION gen_email_name
(p_first_name VARCHAR2, p_last_name VARCHAR2, p_id NUMBER)
RETURN VARCHAR2
is
v_email_name VARCHAR2(19);
BEGIN
v_email_home := SUBSTR(p_first_name, 1, 1) ||
SUBSTR(p_last_name, 1, 7) ||
'@Oracle.com';
UPDATE employees
SET email = v_email_name
WHERE employee_id = p_id;
RETURN v_email_name;
END;
You run this SELECT statement:
SELECT first_name, last_name
gen_email_name(first_name, last_name, 108) EMAIL
FROM employees;
What occurs?

A) The statement fails because functions called from SQL expressions cannot perform DML.
B) Employee 108 has his email name updated based on the return result of the function.
C) The SQL statement executes successfully and control is passed to the calling environment.
D) The statement fails because the functions does not contain code to end the transaction.
E) The SQL statement executes successfully, because UPDATE and DELETE statements are ignoring in stored functions called from SQL expressions.

5. Examine this code CREATE OR REPLACE FUNCTION change_dept (p_old_id NUMBER, p_deptname VARCHAR2) RETURN NUMBER IS V_new_id NUMBER; BEGIN SELECT departments_seq.nextval INTO v_new_id FROM dual; UPDATE departments SET departmenet_id = v_new_id, Department_name = p_deptname WHERE department_id = p_old_id; Return v_new_id; END; /
There are no foreign key integrity constraints on the EMPLOYEES and DEPARTMENTS tables. Which statement performs a successful update to the EMPLOYEES table?

A) UPDATE departments
change_dept(270, 'Outsource')
Where department_name = 'payroll';
B) UPDATE departments
SET department_id = change_dept(10, 'Finance')
Where department_id = 10;
C) UPDATE employees
SET department_id = change_dept(10, 'Finance')
Where department_id = 10;
D) UPDATE employees
SET department_id = change_dept(10, 'Finance')
Where department_id = DEPARTMENTS:CURRVAL;

Solutions: