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Oracle9i program with pl/sql Sample Questions:

1. Examine this code:
CREATE OR REPLACE PACKAGE comm_package
IS
g_comm NUMBER := 10;
PROCEDURE reset_comm(p_comm IN NUMBER);
END comm_package;
/
User Jones executes the following code at 9:01am: EXECUTE comm_package.g_comm := 15
User Smith executes the following code at 9:05am: EXECUTE comm_paclage.g_comm := 20
Which statement is true?

A) g_comm has a value of 10 at 9:03am for both Jones and Smith
B) g_comm has a value of 15 at 9:06am for Jones.
C) g_comm has a value of 20 at 9:06am for both Jones and Smith.
D) g_comm has a value of 15 at 9:06am for Smith.
E) g_comm has a value of 10 at 9:06am for both Jones and Smith.
F) g_comm has a value of 15 at 9:03 am for both Jones and Smith.

2. How can you migrate from a LONG to a LOB data type for a column?

A) Use the DBMS_LOB.MIGRATE procedure.
B) Use the UTL_MANAGE_LOMIGRATE procedure.
C) You cannot migrate from a LONG to a LOB date type for a column.
D) Use the ALTER TABLE command.
E) Use the DBMS_MANAGE_LOB.MIGRATE procedure.

3. There is a CUSTOMER table in a schema that has a public synonym CUSTOMER and you are granted all object privileges on it. You have a procedure PROCESS_CUSTOMER that processes customer information that is in the public synonym CUSTOMER table. You have just created a new table called CUSTOMER within your schema. Which statement is true?

A) If the structure of your CUSTOMER table is the same as the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER is invalidated and gives compilation errors.
B) If the structure of your CUSTOMER table is the same as the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER successfully recompiles when invoked and accesses your CUSTOMER table.
C) If the structure of your CUSTOMER table is entirely different from the public synonym CUSTOMER table then the procedure PROCESS_CUSTOMER successfully recompiles and accesses your CUSTOMER table.
D) Creating the table has no effect and procedure PROCESS_CUSTOMER still accesses data from public synonym CUSTOMER table.

4. 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 V_PLAYER_AVG NUMBER(4,3); 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; VALIDATE_PLAYER_STAT(V_ID);
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 .333 to the V_PLAYER_AVG variable from a procedure
outside the package?

A) V_PLAYER_AVG := .333;
B) This variable cannot be assigned a value from outside of the package.
C) BB_PACK.UPD_PLAYER_STAT.V_PLAYER_AVG := .333;
D) BB_PACK.V_PLAYER_AVG := .333;

5. You create a DML trigger. For the timing information, which is valid with a DML trigger?

A) ON STATEMENT EXECUTION
B) BEFORE
C) DURING
D) ON SHUTDOWN
E) INSTEAD

Solutions: