Pl sql Quiz, procedural language quiz, pl sql examples Database Features PL/SQL is a procedural language designed specifically to embrace SQL statements within its syntax.

2. Q 3 - Which of the following is true about
the following code snippet?
DECLARE
a number(3) := 100;
BEGIN
IF (a = 50 ) THEN
dbms_output.put_line('Value of a is 10' );
ELSEIF ( a = 75 ) THEN
dbms_output.put_line('Value of a is 20' );
ELSE
dbms_output.put_line('None of the values is matching');
END IF;
dbms_output.put_line('Exact value of a is: '|| a ); END;
A - It has syntax error.
B - It will print 'None of the values is matching'.
C - It will print None of the values is matching Exact value of a is: 100
D - None of the above.

3. A Stored Procedure is a
a. Sequence of SQL or PL/SQL
statements to perform specific function.
b. b. Stored in compiled form in the
database.
c. c. Can be called from all client
environments.
d. d. All of the above.

4. Which of the following is NOT
VALID in PL/SQL ?
a] Select ... Into
b] Update
c] Create
d] Delete

5. What is the Result of the
following 'VIK'||NULL||'RAM' ?
a] Error
b] VIK RAM
c] VIKRAM
d] NULL

6.  Declare
a number := 5; b number := null; c number :=
10;
Begin
if a > b AND a < c then
a := c * a;
end if;
End;
What will be the value of 'a' after execution ?
a] 50
b] NULL
c] 5
d] None of the above

7. Consider the following code
snippet: how many times the
loop will run?
DECLARE a number(2) := 9;
BEGIN
WHILE a < 30
LOOP a := a + 3;
END LOOP; END;
A - 10
B - 8
C - 7
D - 9

8. - Which of the following is
true about comments in
PL/SQL?
A - Comments are explanatory statements.
B - PL/SQL supports both single-line and
multi-line comments.
C - The PL/SQL single-line comments start
with the delimiter -- (double hyphen) and
multi-line comments are enclosed by /* and
*/.
D - All of the above.

9. DECLARE
a number;
PROCEDURE
squareNum(x IN OUT number)
IS
BEGIN
x := x * x;
END;
BEGIN
a:= 5;
squareNum(a);
dbms_output.put_line(a);
END;
A - 5
B - 10
C - 25
D - 0

10. What will be the output of the
following code snippet?
DECLARE
a number(3) := 100;
b number(3) := 200;
BEGIN
IF( a = 100 ) THEN
IF( b <> 200 ) THEN
dbms_output.put_line(b);
END IF;
END IF;
dbms_output.put_line(a);
END;
A - It has syntax error, so there will not be any output.
B - 200
C - 200 100
D - 100

11. What will happen when the code is executed?
DECLARE num number := 95;
BEGIN dbms_output.put_line('num: ' || num1);
DECLARE
num number := 195;
BEGIN
dbms_output.put_line('num: ' || num1);
END;
END;
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

12. Consider the following code
snippet: how many times the
loop will run?
DECLARE
a number(2) := 9;
BEGIN
WHILE a < 30 LOOP a := a + 3;
END LOOP; END;
A - 10
B - 8
C - 7
D - 9

13. CREATE OR REPLACE FUNCTION
totalCustomers total number(2) := 0;
BEGIN
SELECT count(*) into total FROM customers;
RETURN total;
END;
A - It doesn’t have the RETURN clause in function
declaration.
B - The RETURN statement is wrong.
C - Function definition should not use the IS
keyword
D - Nothing wrong.

14. Which of the following is true about the
execution section of a PL/SQL block?
 A - It is enclosed between the keywords
BEGIN and END.
 B - It is a mandatory section.
 C - It consists of the executable PL/SQL
statements.
 D - All of the above.

15. What is the output of the
following code?
DECLARE
x number := 4;
BEGIN
LOOP
dbms_output.put_line(x);
x := x + 1;
exit
WHEN x > 5;
END LOOP;
dbms_output.put_line(x);
END;
A - 4 5 6
B - 4 5
C - 4
D - None of the above.

16. DECLARE
num number;
fn number;
FUNCTION fx(x number) RETURN number IS
f number;
BEGIN
IF x=0 THEN
f := 1; ELSE
f := x * fx(x-1);
END IF;
RETURN f;
END;
BEGIN
num:= 5;
Fn := fx(num);
dbms_output.put_line(fn);
END;
A - 1
B - 5
C - 10
D - 125

17. Which of the following is the
correct syntax for creating an
explicit cursor?

 A - CURSOR cursor_name IS
select_statement;
 B - CREATE CURSOR cursor_name IS
select_statement;
 C - CREATE CURSOR cursor_name AS
select_statement;
 D - CURSOR cursor_name AS
select_statement;

18. What would be printed when the following code is
executed?
DECLARE
x NUMBER;
BEGIN
x := 5; x := 10;
dbms_output.put_line(-x);
dbms_output.put_line(+x);
x := -10;
dbms_output.put_line(-x);
dbms_output.put_line(+x);
END;
A -10 10 10 -10
B 10 -10 10-10
C -10 +10 +10 -10
D - 10 -10 -10 10

19. Which of the following
statements is true about
implicit cursors?
A.Implicit cursors are used for SQL statements that
are not named.
B. Developers should use implicit cursors with great
care.
C. Implicit cursors are used in cursor for loops to
handle data processing.
D. Implicit cursors are no longer a feature in Oracle.

20. Select invalid variable types
A. CHAR
B. VARCHAR1
C. VARCHAR2
D. INTEGER
E. NUMBER

21.  he || is is an example of what function
SELECT last_name || ', ' || first_name || ' ' ||
middle_name
FROM employees;
A. Incantination
B. Integration
C. Continuation
D. Concatenation
E. None of the above

22. Select the best answer. Which listed
attribute is an invalid attribute of an
Explicit cursor.
A. %NOTFOUND
B. %FOUND
C. %ROWCOUNT
D. %ISOPEN
E. None of the above. All of these are valid.