PL/SQL Online Quiz

Answer : D

Q 2 - To get the server output result and display it into the screen, you need to write −

Answer : A

Q 3 - What is wrong in the following code snippet?

DECLARE
   x number := 1;
BEGIN
   LOOP
      dbms_output.put_line(x);
      x := x + 1;
      IF x > 10 THEN
         exit;
      END IF;
     dbms_output.put_line('After Exit x is: ' || x);
END;

A - There is nothing wrong.

B - The IF statement is not required.

C - There should be an END LOOP statement.

D - The exit statement should be in capital letters.

Answer : C

Q 4 - Which of the following is true about the PL/SQL data structure VARRAY?

A - It also has a maximum size that cannot be changed.

B - A VARRAY type is created with the CREATE VARRAY statement, at the schema level.

C - Maximum size of a VARRAY can be changed using the ALTER TYPE statement.

D - Maximum size of a VARRAY can be changed using the ALTER VARRAY statement.

Answer : C

Q 5 - Which of the following is a way of passing parameters to PL/SQL subprograms?

A - Positional notation

B - Named notation

C - Mixed notation

D - All of the above.

Answer : D

Q 6 - Consider the exception declared as −

emp_exception1 EXCEPTION;

Which of the following statement will correctly call the exception in a PL/SQL block?

A - IF c_id <= 0 THEN ex_invalid_id;

B - IF c_id <= 0 THEN CALL ex_invalid_id;

C - IF c_id <= 0 THEN RAISE ex_invalid_id;

D - IF c_id <= 0 THEN EXCEPTION ex_invalid_id;

Answer : C

Q 7 - Observe the syntax given below −

CREATE [OR REPLACE ] TRIGGER trigger_name 
{BEFORE | AFTER | INSTEAD OF } 
{INSERT [OR] | UPDATE [OR] | DELETE} 
[OF col_name] 
ON table_name 
[REFERENCING OLD AS o NEW AS n] 
[FOR EACH ROW] 
WHEN (condition)  
DECLARE
   Declaration-statements
BEGIN 
   Executable-statements
EXCEPTION
   Exception-handling-statements
END;

The optional [FOR EACH ROW] clause specifies

A - A table with index.

B - A table with primary key.

C - A row level trigger.

D - A table with a unique key.