1. PL/SQL
MULTIPLE CHOICE QUESTION

2. Check your Knowledge
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3. 1. What is wrong in the following code snippet
1. 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;
There is nothing wrong.
The IF statement is not required.
There should be an END LOOP statement.
The exit statement should be in capital letters.

4. 2. Which of the following is the correct syntax for creating a VARRAY named grades, which can hold 100 integers, in a PL/SQL block?
TYPE grades IS VARRAY(100) OF INTEGERS;
VARRAY grades IS VARRAY(100) OF INTEGER;
TYPE grades VARRAY(100) OF INTEGER;
TYPE grades IS VARRAY(100) OF INTEGER;

5. 3. What would be the output of the following code
3. What would be the output of the following code? 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; 1 5 25
125

6. 4. Consider the exception declared as - emp_exception1 EXCEPTION; Which of the following statement will correctly call the exception in a PL/SQL block?
IF c_id <= 0 THEN ex_invalid_id;
IF c_id <= 0 THEN RAISE ex_invalid_id;
IF c_id <= 0 THEN CALL ex_invalid_id;
IF c_id <= 0 THEN EXCEPTION ex_invalid_id;

7. 5. If an UNIQUE KEY constraint on DATE column is created, will it accept the rows that are inserted with SYSDATE?
Will
Wont
May be
None of these

8. PACKAGE cust_sal AS PROCEDURE find_sal(c_id customers.id%type);
6. Which of the following statement will create the specification for a package named cust_sal:
CREATE PACKAGE BODY cust_sal AS PROCEDURE find_sal(c_id customers.id%type);END cust_sal;
CREATE PACKAGE cust_sal AS PROCEDURE find_sal(c_id customers.id%type);END cust_sal;
CREATE PACKAGE SPECIFICATION cust_sal AS PROCEDURE find_sal(c_id customers.id%type);END cust_sal;
PACKAGE cust_sal AS PROCEDURE find_sal(c_id customers.id%type);

9. 7. The collection method COUNT
Returns the last (largest) index numbers in a collection that uses integer subscripts.
Returns the number of elements that a collection currently contains.
Checks the Maximum Size of a Collection.
None of the above.

10. 8. What will be the output of the following code
8. What will be the output of the following code? DECLARE lines dbms_output.chararr; num_lines number;BEGIN dbms_output.enable; dbms_output.put_line('Hello!'); dbms_output.put_line('Hope you are doing well!'); num_lines := 2; dbms_output.get_lines(lines, num_lines); FOR i IN 1..num_lines LOOP dbms_output.put_line(lines(i)); END LOOP; END;
Hello!
Hope you are doing well!
Hello!
Hope you He Ho
Hello !

11. 9. Which of the following is true about data types in PL/SQL?
Large Object or LOB data types are pointers to large objects that are stored separately from other data items, such as text, graphic images, video clips, and sound waveforms.
The composite data types have data items that have internal components that can be accessed individually. For example, collections and records.
References are pointers to other data items.
All of the above

12. 10. What is wrong in the following code
10. What is wrong in the following code? DECLARE c_id := 1; c_name customers.name%type; c_addr customers.address%type; BEGIN SELECT name, address INTO c_name, c_addr FROM customers WHERE id = c_id; END;
You cannot use the SELECT INTO statement of SQL to assign values to PL/SQL variables.
The SELECT INTO statement here is wrong. It should be: SELECT c_name, c_address INTO name, addr
The WHERE statement is wrong. It should be: WHERE id := c_id;
The variable c_id should be declared as a type-compatible variable as −
c_id customers.id%type := 1;

13. 11. What is wrong in the following code snippet
11. 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;
There is nothing wrong.
The IF statement is not required.
There should be an END LOOP statement.
The exit statement should be in capital letters.

14. 12. Which of the following is the correct syntax for creating a VARRAY named grades, which can hold 100 integers, in a PL/SQL block?
TYPE grades IS VARRAY(100) OF INTEGERS;
VARRAY grades IS VARRAY(100) OF INTEGER;
TYPE grades VARRAY(100) OF INTEGER;
TYPE grades IS VARRAY(100) OF INTEGER;

15. 13. What would be the output of the following code
13. What would be the output of the following code? 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; 1 5 25
125

16. 14. Which of the following code correctly create a record named book with two field title and author?
TYPE book IS RECORD
(title varchar(50), author varchar(50), );
RECORD book
(title varchar(50), author varchar(50), );
CREATE RECORD book
(title varchar(50), author varchar(50), );
CREATE TYPE book
(title varchar(50), author varchar(50), );

17. 15. Which of the following holds true for the WHEN clause
15. Which of the following holds true for the WHEN clause? Observe the syntax given below − CREATE [OR REPLACE ] TRIGGER trigger_name { BEFORE | AFTER | INSTEAD OF } { INSERT [OR] | UPDATE [OR] | DELETE} [OF col_name] table_name [REFERENCING OLD AS o NEW AS n] [FOR EACH ROW] WHEN (condition) DECLARE Declaration-statements BEGIN Executable-statementsEXCEPTION Exception-handling-statements END;
This provides a condition for rows for which the trigger would fire and this clause is valid only for view based triggers.
This provides a condition for rows for which the trigger would fire and this clause is valid only for row level triggers.
This provides a condition for rows for which the trigger would fire and this clause is valid only for table level triggers.

18. 16.  Which of the following syntax will be used to access a package element?
package_name element_name;
element_name.package_name;
package_name.element_name;
None of these

19. 17. The collection method LAST
Returns the last (largest) index numbers in a collection that uses integer subscripts.
Returns the number of elements that a collection currently contains.
Checks the Maximum Size of a Collection.
None of the above.

20. 18. What would be printed when the following code is executed
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;
-10 10
10 -10
10 10
10 -01
10 -10
10 10

21. 19. Which of the following is TRUE 1] Host variables are declared anywhere in the program 2] Host variables are declared in the DECLARE section
Only 1 is TRUE
Only 2 is TRUE
Both 1 & 2are TRUE
Both are false

22. 20. Which of the following is NOT VALID is PL/SQL
Bool boolean;
NUM1, NUM2 number;
deptname dept.dname%type;
date1 date := sysdate

23. 21. What will be the value of svar after the execution
21. What will be the value of svar after the execution ? Declare fvar number := null; svar number := 5 Begin goto << fproc>> if fvar is null then << fproc>> svar := svar + 5 end if; End;  
Error 10 5
none

24. 22. A Stored Procedure is an:
Sequence of SQL or PL/SQL statements to perform specific function
Stored in compiled form in the database
Can be called from all client environments
All of above

25. 23. Which of the following statement is false
Any procedure can raise an error and return a user message and error number
Error number ranging from to are reserved for user defined messages
Oracle checks Uniqueness of User defined errors
Raise_Application_error is used for raising a user defined error.

26. 24. Is it possible to open a cursor which is in a Package in another procedure?
Yes No

27. 25. Is it possible to use Transactional control statements in Database Triggers? 
Yes No

28. 26. Is it possible to Enable or Disable a Database trigger?
Yes No

29. 27. PL/SQL supports datatype(s)
Scalar data type
Composite datatype
All of these
None of these

30. 28. Find the ODD data type out
VARCHAR2
RECORD
BOOLEAN
RAW

31. 29. Which of the following is not correct about the "TABLE" data type ?
Can contain any no. of columns
Simulates a One-dimensional array of unlimited size
Column datatype of any Scalar type
None of these

32. 30. Find the ODD one out of the following
OPEN
CLOSE
FETCH
INSERT

33. 31. Which of the following is not correct about Cursor?
Cursor is a named Private SQL area
Cursor holds temporary results
Cursor is used for retrieving multiple rows
SQL uses implicit Cursors to retrieve rows

34. 32. Which of the following is NOT VALID in PL/SQL ?
. Select ... into
Update
CREATE
Delete

35. 33. What is the Result of the following 'VIK'||NULL||'RAM'?
ERROR
VIK RAM
VIKRAM
NULL

36. 34. What will be the value of 'a' after execution
34. What will be the value of 'a' after execution ? Declare a number := 5; b number := null; c number := 10; Begin if a > b AND a < c then a := c * a; end if; End; 50
Null 5
None of these

37. 35. Does the Database trigger will fire when the table is TRUNCATED?
Yes No

38. 36. SUBSTR(SQUARE ANS ALWAYS WORK HARD,14, 6) will return
WAYAL

39. 37. REPLACE('JACK AND JUE','J','BL') will return
JACK AND BLUE
BLACK AND JACK
BLACK AND BLUE
None of the above

40. 38. TRANSLATE ('333SQD234','0123456789ABCDPQRST','0123456789') will return
333234
333334
334323
344344

41. EMPNO ENAME SAL A822 RAMASWAMY A812 NARAYAN A973 UMESH A500 BALAJI Use these data for the following Questions Select SAL from EMP E1 where 3 > ( Select count(*) from Emp E2 where E1.SAL > E2.SAL ) will retrieve
3500,5000,2500
5000,2850
2850,5750
5000,5750

42. 40. Is it possible to modify a Data type of a column when column contains data?
Yes No

43. 41. Which of the following is not correct about a View ?
To protect some of the columns of a table from other users
Occupies data storage space
To hide complexity of a query
To hide complexity of a calculations

44. 42. Which is not part of the Data Definition Language ?
CREATE
ALTER
ALTER SESSION
None of these

45. 43. The Data Manipulation Language statements are
INSERT
UPDATE
SELECT
All of these

46. EMPNO ENAME SAL A822 RAMASWAMY 3500 A812 NARAYAN 5000 A973 UMESH A500 BALAJI Using the above data Select count(sal) from Emp will retrieve 1 3
None of these

47. 45. What are the different events in Triggers?
Define, create
Drop, Comment
Insert, Update, Delete
All of the above

48. 46. What built-in subprogram is used to manipulate images in image items?
Zoom_out
Zoom_in
Image_zoom
Zoom_image

49. 47. Can we pass RECORD GROUP between FORMS?
Yes No

50. 48. SHOW_ALERT function returns
Boolean
Number
Character
None

51. 49. What SYSTEM VARIABLE is used to refer DATABASE TIME ?
$$dbtime$$
$$time$$
$$datetime$$
None of the above

52. 50. Which of the following is not true about the exception handling section of a PL/SQL block?
This section starts with the EXCEPTION keyword.
It contains exception(s) that handle errors in the program.
It is a mandatory section.
None of the above

53. The Results