PL/SQL Online Quiz


Advertisements

Following quiz provides Multiple Choice Questions (MCQs) related to PL/SQL. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 2 - Consider the following code −

DECLARE
   -- Global variables 
   num number := 95; 
BEGIN 
   dbms_output.put_line('num: ' || num1);
   DECLARE 
      -- Local variables
      num number := 195; 
     BEGIN 
      dbms_output.put_line('num: ' || num1);
     END; 
END;

What will happen when the code is executed?

A - It won’t execute, it has syntax error

B - It will print

     num: 95

     num: 195

C - It will print

     num: 95

     num: 95

D - It will print

     num: 195

     num: 195

Answer : B

Answer : B

Explanation

The label should be enclosed by double angle brackets (<< and >>)

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 - Which of the following code will successfully declare an exception named emp_exception1 in a PL/SQL block?

A - EXCEPTION emp_exception1;

B - emp_exception1 EXCEPTION;

C - CREATE EXCEPTION emp_exception1;

D - CREATE emp_exception1 AS EXCEPTION;

Answer : B

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 {INSERT [OR] | UPDATE [OR] | DELETE} clause specifies a

A - DDL operation.

B - DML operation.

C - None of the above.

D - Both of the above.

Answer : B

Q 8 - Any subprogram not in the package specification but coded in the package body is called a

A - Public object.

B - Private object.

C - None of the above.

D - Both of the above.

Answer : B

plsql_questions_answers.htm
Advertisements