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Oracle9i program with pl/sql Sample Questions:

1. Examine this procedure:
CREATE OR REPLACE PROCEDURE INSERT_TEAM
(V_ID in NUMBER, V_CITY in VARCHAR2 DEFAULT 'AUSTIN', V_NAME in VARCHAR2)
IS
BEGIN
INSERT INTO TEAM (id, city, name)
VALUES (v_id, v_city, v_name);
COMMIT;
END
Which two statements will successfully invoke this procedure in SQL *Plus? (Choose two)

A) EXECUTE INSERT_TEAM (3, 'LONGHORNS');
B) EXECUTE INSERT_TEAM(3, V_NAME=>'LONGHORNS', V_CITY=>'AUSTIN');
C) EXECUTE INSERT_TEAM;
D) EXECUTE INSERT_TEAM (V_ID := V_NAME := 'LONGHORNS', V_CITY := 'AUSTIN');
E) EXECUTE INSERT_TEAM(3, 'AUSTIN','LONGHORNS');

2. Which two statements are true about LOBs? (Choose two.)

A) BFILES are stored in the database
B) The Oracle9i server performs implicit conversions between BLOBs and NUMBER data types
C) All LOBs have read and write access
D) The Oracle9i server performs implicit conversions between CLOBs and VARCHAR2 data types
E) NCLOB represents a multi-byte character object

3. Examine this procedure:
CREATE OR REPLACE PROCEDURE DELETE_PLAYER (V_ID IN NUMBER) IS BEGIN
DELETE FROM PLAYER
WHERE ID = V_ID;
EXCEPTION
WHEN STATS_EXITS_EXCEPTION
THEN DBMS_OUTPUT.PUT_LINE
('Cannot delete this player, child records exist in PLAYER_BAT_STAT table');
END;
What prevents this procedure from being created successfully?

A) A comma has been left after the STATS_EXIST_EXCEPTION exception.
B) The STATS_EXIST_EXCEPTION has not been declared as an exception.
C) The STATS_EXIST_EXCEPTION has not been declared as a number.
D) Only predefined exceptions are allowed in the EXCEPTION section.

4. Examine the trigger:
CREATE OR REPLACE TRIGGER Emp_count
AFTER DELETE ON Emp_tab
FOR EACH ROW
DELCARE
n INTEGER;
BEGIN
SELECT COUNT(*)
INTO n
FROM Emp_tab;
DBMS_OUTPUT.PUT_LINE(' There are now ' || a ||
' employees,');
END;
This trigger results in an error after this SQL statement is entered:
DELETE FROM Emp_tab WHERE Empno = 7499;
How do you correct the error?

A) Change the trigger to a statement-level trigger by removing FOR EACH ROW.
B) Remove the DBMS_OUTPUT statement because it is not allowed in a trigger.
C) Take out the COUNT function because it is not allowed in a trigger.
D) Change the trigger type to a BEFORE DELETE.

5. Examine this code:
CREATE OR REPLACE PROCEDURE insert_dept
(p_location_id NUMBER)
IS
v_dept_id NUMBER(4);
BEGIN
INSERT INTO departments
VALUES (5, 'Education', 150, p_location_id);
SELECT department_id
INTO v_dept_id
FROM employees
WHERE employee_id=99999;
END insert_dept;
/
CREATE OR REPLACE PROCEDURE insert_location
( p_location_id NUMBER,
p_city VARCHAR2)
IS
BEGIN
INSERT INTO locations(location_id, city)
VALUES (p_location_id, p_city);
insert_dept(p_location_id);
END insert_location;
/
You just created the departments, the locations, and the employees table. You did not insert any
rows. Next you created both procedures.
You new invoke the insert_location procedure using the following command:
EXECUTE insert_location (19, 'San Francisco')
What is the result in thisEXECUTE command?

A) The locations, departments, and employees tables are empty.
B) The locations table and the departments table both have one row. The employees table is empty.
C) The departments table has one row.
The locations and the employees tables are empty.
D) The location table has one row.
The departments and the employees tables are empty.

Solutions: