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Oracle9i program with pl/sql Sample Questions:

1. Which statement is true?

A) Stored functions can be called from the SELECT and WHERE clauses only.
B) Stored functions cannot manipulate new types of data, such as longitude and latitude.
C) Stored functions can increase the efficiency of queries by performing functions in the query rather than in the application.
D) Stored functions do not permit calculations that involve database links in a distributed environment.

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

3. Under which two circumstances do you design database triggers? (Choose two)

A) To replicate built-in constraints in the Oracle server such as primary key and foreign key.
B) To guarantee that when a specific operation is performed, related actions are performed.
C) To duplicate the functionality of other triggers.
D) For centralized, global operations that should be fired for the triggering statement, regardless of which user or application issues the statement.

4. 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 successfully recompiles when invoked and accesses your CUSTOMER table.
B) Creating the table has no effect and procedure PROCESS_CUSTOMER still accesses data from public synonym CUSTOMER table.
C) 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.
D) 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.

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

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

Solutions: