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Oracle9i program with pl/sql Sample Questions:

1. Examine this function:
CREATE OR REPLACE FUNCTION CALC_PLAYER_AVG (V_ID in PLAYER_BAT_STAT.PLAYER_ID%TYPE) RETURN NUMBER IS V_AVG NUMBER; BEGIN SELECT HITS / AT_BATS INTO V_AVG FROM PLAYER_BAT_STAT WHERE PLAYER_ID = V_ID; RETURN (V_AVG); END; Which statement will successfully invoke this function in SQL *Plus?

A) CALC_PLAYER('RUTH');
B) CALC_PLAYER_AVG(31);
C) SELECT CALC_PLAYER_AVG(PLAYER_ID) FROM PLAYER_BAT_STAT;
D) START CALC_PLAYER_AVG(31)
E) EXECUTE CALC_PLAYER_AVG(31);

2. When using a packaged function in a query, what is true?

A) The COMMIT and ROLLBACK commands are allowed in the packaged function.
B) You can not use packaged functions in a query statement.
C) The packaged function can execute and INSERT, UPDATE, or DELETE statement against the table that is being queried if it is used in a subquery.
D) The packaged function cannot execute an INSERT, UPDATE, or DELETE statement against the table that is being queried.
E) The packaged function can execute an INSERT, UPDATEM or DELETE statement against the table that is being queried if the pragma RESTRICT REFERENCE is used.

3. You have an AFTER UPDATE row-level on the table EMP. The trigger queries the EMP table and inserts the updating user's information into the AUDIT_TABLE.
What happens when the user updates rows on the EMP table?

A) A compile time error occurs.
B) A runtime error occurs. The effect of trigger body and the triggering statement are rolled back.
C) The trigger fires successfully. The update on the EMP table occurs, and data is inserted into theAUDIT_TABLE table.
D) A runtime error occurs. The effect of trigger body is rolled back, but the update on the EMP table takes place.
E) A runtime error occurs. The update on the EMP table does not take place, but the insert into the AUDIT_TABLE occurs.

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

5. Which four triggering events can cause a trigger to fire? (Choose four)

A) A user executes a SELECT statement with an ORDER BY clause.
B) A user executes a CREATE or an ALTER table statement.
C) A user executes a JOIN statement that uses four or more tables.
D) A specific error or any errors occurs.
E) A specific user or any user logs on or off.
F) A database is shut down or started up.

Solutions: