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Oracle9i program with pl/sql Sample Questions:

1. Which statement about triggers is true?

A) You use a database trigger to fire when an INSERT statement occurs.
B) You use a system event trigger to fire when an UPDATE statement occurs.
C) You use an application trigger to fire when a DELETE statement occurs.
D) You use INSTEAD OF trigger to fire when a SELECT statement occurs.

2. Which table should you query to determine when your procedure was last compiled?

A) USER_OBJECTS
B) USER_PLSQL_UNITS
C) USER_PROCS
D) USER_PROCEDURES

3. What happens during the execute phase with dynamic SQL for INSERT, UPDATE, and DELETE operations?

A) The rows are selected and ordered.
B) An area of memory is established to process the SQL statement.
C) The SQL statement is run and the number of rows processed is returned.
D) The validity of the SQL statement is established.
E) The area of memory established to process the SQL statement is released.

4. The creation of which database objects will cause a DDL trigger to fire? (Choose all that apply)

A) Function
B) Cluster
C) Database links
D) Synonyms
E) Package
F) Index
G) Dimensions

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

Solutions: