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Oracle9i program with pl/sql Sample Questions:

1. Examine the code examples. Which one is correct?

A) CREATE OR REPLACE TRIGGER authorize_action BEFORE EMPLOYEES INSERT CALL log_execution;
B) CREATE OR REPLACE TRIGGER authorize_action BEFORE INSERT ON EMPLOYEES CALL log_execution; /
C) CREATE OR REPLACE TRIGGER authorize_action BEFORE EMPLOYEES INSERT CALL log_execution;
D) CREATE OR REPLACE TRIGGER authorize_action CALL log_execution BEFORE INSERT ON EMPLOYEES; /

2. Which two statements describe the state of a package variable after executing the package in which it is declared? (Choose two)

A) It persists from user to user when the package is invoked.
B) It does not persist from session to session for the same user.
C) It persists across transactions within a session.
D) It does not persist across transaction within a session.
E) It persists from session to session for the same user.

3. Examine this package:
CREATE OR REPLACE PACKAGE BB_PACK
IS
V_MAX_TEAM_SALARY NUMBER(12,2);
PROCEDURE ADD_PLAYER(V_ID IN NUMBER, V_LAST_NAME VARCHAR2,
V_SALARY_NUMBER;
END BB_PACK;
/
CREATE OR REPLACE PACKAGE BODY BB_PACK
IS
PROCEDURE UPD_PLAYER_STAT
(V_ID IN NUMBER, V_AB IN NUMBER DEFAULT 4, V_HITS IN NUMBER)
IS
BEGIN
UPDATE PLAYER_BAT_STAT
SET AT_BATS = AT_BATS + V_AB,
HITS = HITS + V_HITS
WHERE PLAYER_ID = V_ID)
COMMIT;
END UPD_PLAYER_STAT;
PROCEDURE ADD_PLAYER
(V_ID IN NUMBER, V_LAST_NAME VARCHAR2, V_SALARY NUMBER)
IS
BEGIN
INSERT INTO PLAYER(ID,LAST_NAME,SALARY)
VALUES (V_ID, V_LAST_NAME, V_SALARY);
UPD_PLAYER_STAT(V_ID,0.0);
END ADD_PLAYER;
END BB_PACK;
Which statement will successfully assign $75,000,000 to the V_MAX_TEAM_SALARY variable
from within a stand-alone procedure?

A) V_MAX_TEAM_SALARY := 7500000;
B) BB_PACK.ADD_PLAYER.V_MAX_TEAM_SALARY := 75000000;
C) BB_PACK.V_MAX_TEAM_SALARY := 75000000;
D) This variable cannot be assigned a value from outside the package.

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

5. Which statement is valid when removing procedures?

A) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package body.
B) For faster removal and re-creation, do not use a drop procedure statement.
Instead, recompile the procedure using the alter procedure statement with the REUSE SETTINGS
clause.
C) Use a drop procedure statement to drop a standalone procedure.
D) Use a drop procedure statement to drop a procedure that is part of a package.
Then recompile the package specification.

Solutions: