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Oracle9i program with pl/sql Sample Questions:

1. You need to implement a virtual private database (vpd). In order to have the vpd functionality, a trigger is required to fire when every user initiates a session in the database.What type of trigger needs to be created?

A) System event trigger
B) DML trigger
C) Application trigger
D) INSTEAD OF trigger

2. You create a DML trigger. For the timing information, which are valid with a DML trigger?

A) DURING
B) ON STATEMENT EXECUTION
C) IN PLACE OF
D) BEFORE
E) ON SHUTDOWN

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) Only predefined exceptions are allowed in the EXCEPTION section.
D) The STATS_EXIST_EXCEPTION has not been declared as a number.

4. Examine this package specification:
CREATE OR REPLACE PACKAGE concat_all
IS
v_string VARCHAR2(100);
PROCEDURE combine (p_num_val NUMBER);
PROCEDURE combine (p_date_val DATE);
PROCEDURE combine (p_char_val VARCHAR2, p_num_val NUMBER);
END concat_all; /
Which overloaded COMBINE procedure declaration can be added to this package specification?

A) PROCEDURE combine (p_no NUMBER);
B) PROCEDURE combine;
C) PROCEDURE combine (p_val_1 VARCHAR2, p_val_2 NUMBER;
D) PROCEDURE concat_all
(p_num_val VARCHAR2, p_char_val NUMBER);

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

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

Solutions: