Oracle Database Question Bank    ... 8


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Oracle DBA

1. SNAPSHOT is used for
[DBA] a] Synonym, b] Table space, c] System server, d] Dynamic data
replication
Ans : D

2. We can create SNAPSHOTLOG for
[DBA] a] Simple snapshots, b] Complex snapshots, c] Both A & B, d]
Neither A nor B
Ans : A

3. Transactions per rollback segment is derived from
[DBA] a] Db_Block_Buffers, b] Processes, c] Shared_Pool_Size, d] None
of the above
Ans : B

4. ENQUEUE resources parameter information is derived from
[DBA] a] Processes or DDL_LOCKS and DML_LOCKS, b] LOG_BUFFER,
c] DB__BLOCK_SIZE..
Ans : A

5. LGWR process writes information into
a] Database files, b] Control files, c] Redolog files, d] All the
above.
Ans : C

6. SET TRANSACTION USE ROLLBACK SEGMENT is used to create user
objects
in a particular Tablespace
a] True, b] False
Ans : False

7. Databases overall structure is maintained in a file called
a] Redolog file, b] Data file, c] Control file, d] All of the
above.
Ans : C

8. These following parameters are optional in init.ora parameter file
DB_BLOCK_SIZE,
PROCESSES
a] True, b] False
Ans : False

9. Constraints cannot be exported through EXPORT command
a] True, b] False
Ans : False

10. It is very difficult to grant and manage common privileges needed by
different groups of
database users using the roles
a] True, b] False
Ans : False

11. What is difference between a DIALOG WINDOW and a DOCUMENT WINDOW
regarding
moving the window with respect to the application window
a] Both windows behave the same way as far as moving the window is
concerned.
b] A document window can be moved outside the application window while
a dialog
window cannot be moved
c] A dialog window can be moved outside the application window while a
document
window cannot be moved
Ans : C

12. What is the difference between a MESSAGEBOX and an ALERT
a] A messagebox can be used only by the system and cannot be used in
user application
while an alert can be used in user application also.
b] A alert can be used only by the system and cannot be use din user
application
while an messagebox can be used in user application also.
c] An alert requires an response from the userwhile a messagebox just
flashes a message
and only requires an acknowledment from the user
d] An message box requires an response from the userwhile a alert just
flashes a
message an only requires an acknowledment from the user
Ans : C

13. Which of the following is not an reason for the fact that most of the
processing is done at the
server ?
a] To reduce network traffic. b] For application sharing, c] To
implement business rules
centrally, d] None of the above
Ans : D

14. Can a DIALOG WINDOW have scroll bar attached to it ?
a] Yes, b] No
Ans : B

15. Which of the following is not an advantage of GUI systems ?
a] Intuitive and easy to use., b] GUI's can display multiple
applications in multiple windows
c] GUI's provide more user interface objects for a developer
d] None of the above
Ans :D

16. What is the difference between a LIST BOX and a COMBO BOX ?
a] In the list box, the user is restricted to selecting a value from a
list but in a combo box
the user can type in a value which is not in the list
b] A list box is a data entry area while a combo box can be used only
for control purposes
c] In a combo box, the user is restricted to selecting a value from a
list but in a list box the
user can type in a value which is not in the list
d] None of the above
Ans : A

17. In a CLIENT/SERVER environment , which of the following would not be
done at the client ?
a] User interface part, b] Data validation at entry line, c]
Responding to user events,
d] None of the above
Ans : D

18. Why is it better to use an INTEGRITY CONSTRAINT to validate data in a
table than to use a
STORED PROCEDURE ?
a] Because an integrity constraint is automatically checked while data
is inserted into or
updated in a table while a stored procedure has to be
specifically invoked
b] Because the stored procedure occupies more space in the database
than a integrity
constraint definition
c] Because a stored procedure creates more network traffic than a
integrity constraint
definition
Ans : A

19. Which of the following is not an advantage of a client/server model ?
a] A client/server model allows centralised control of data and
centralised implementation
of business rules.
b] A client/server model increases developer;s productivity
c] A client/server model is suitable for all applications
d] None of the above.
Ans : C

20. What does DLL stands for ?
a] Dynamic Language Library
b] Dynamic Link Library
c] Dynamic Load Library
d] None of the above
Ans : B

21. POST-BLOCK trigger is a
a] Navigational trigger
b] Key trigger
c] Transactional trigger
d] None of the above
Ans : A

22. The system variable that records the select statement that SQL * FORMS
most recently used
to populate a block is
a] SYSTEM.LAST_RECORD
b] SYSTEM.CURSOR_RECORD
c] SYSTEM.CURSOR_FIELD
d] SYSTEM.LAST_QUERY
Ans: D

23. Which of the following is TRUE for the ENFORCE KEY field
a] ENFORCE KEY field characterstic indicates the source of the value
that SQL*FORMS
uses to populate the field
b] A field with the ENFORCE KEY characterstic should have the INPUT
ALLOWED
charaterstic turned off
a] Only 1 is TRUE
b] Only 2 is TRUE
c] Both 1 and 2 are TRUE
d] Both 1 and 2 are FALSE
Ans : A

24. What is the maximum size of the page ?
a] Characters wide & 265 characters length
b] Characters wide & 265 characters length
c] Characters wide & 80 characters length
d] None of the above
Ans : B

25. A FORM is madeup of which of the following objects
a] block, fields only,
b] blocks, fields, pages only,
c] blocks, fields, pages, triggers and form level procedures,
d] Only blocks.
Ans : C

26. For the following statements which is true
1] Page is an object owned by a form
2] Pages are a collection of display information such as constant text
and graphics.
a] Only 1 is TRUE
b] Only 2 is TRUE
c] Both 1 & 2 are TRUE
d] Both are FALSE
Ans : B

27. The packaged procedure that makes data in form permanent in the
Database is
a] Post
b] Post form
c] Commit form
d] None of the above
Ans : C

28. Which of the following is TRUE for the SYSTEM VARIABLE $$date$$
a] Can be assigned to a global variable
b] Can be assigned to any field only during design time
c] Can be assigned to any variable or field during run time
d] None of the above
Ans : B

29. Which of the following packaged procedure is UNRESTRICTED ?
a] CALL_INPUT, b] CLEAR_BLOCK, c] EXECUTE_QUERY, d] USER_EXIT
Ans : D

30. Identify the RESTRICTED packaged procedure from the following
a] USER_EXIT, b] MESSAGE, c] BREAK, d] EXIT_FORM
Ans : D

31. What is SQL*FORMS
a] SQL*FORMS is a 4GL tool for developing & executing Oracle based
interactive
applications.
b] SQL*FORMS is a 3GL tool for connecting to the Database.
c] SQL*FORMS is a reporting tool
d] None of the above.
Ans : A

32. Name the two files that are created when you generate a form using
Forms 3.0
a] FMB & FMX, b] FMR & FDX, c] INP & FRM, d] None of the above
Ans : C

33. What is a trigger
a] A piece of logic written in PL/SQL
b] Executed at the arrival of a SQL*FORMS event
c] Both A & B
d] None of the above
Ans : C

34. Which of the folowing is TRUE for a ERASE packaged procedure
1] ERASE removes an indicated Global variable & releases the memory
associated with it
2] ERASE is used to remove a field from a page
1] Only 1 is TRUE
2] Only 2 is TRUE
3] Both 1 & 2 are TRUE
4] Both 1 & 2 are FALSE
Ans : 1

35. All datafiles related to a Tablespace are removed when the Tablespace
is dropped
a] TRUE
b] FALSE
Ans : B

36. Size of Tablespace can be increased by
a] Increasing the size of one of the Datafiles
b] Adding one or more Datafiles
c] Cannot be increased
d] None of the above
Ans : B

37. Multiple Tablespaces can share a single datafile
a] TRUE
b] FALSE
Ans : B

38. A set of Dictionary tables are created
a] Once for the Entire Database
b] Every time a user is created
c] Every time a Tablespace is created
d] None of the above
Ans : A

39. Datadictionary can span across multiple Tablespaces
a] TRUE
b] FALSE
Ans : B

40. What is a DATABLOCK
a] Set of Extents
b] Set of Segments
c] Smallest Database storage unit
d] None of the above
Ans : C

41. Can an Integrity Constraint be enforced on a table if some existing
table data does not satisfy
the constraint
a] Yes
b] No
Ans : B

42. A column defined as PRIMARY KEY can have NULL's
a] TRUE
b] FALSE
Ans : B

43. A Transaction ends
a] Only when it is Committed
b] Only when it is Rolledback
c] When it is Committed or Rolledback
d] None of the above
Ans : C

44. A Database Procedure is stored in the Database
a] In compiled form
b] As source code
c] Both A & B
d] Not stored
Ans : C

45. A database trigger doesnot apply to data loaded before the definition
of the trigger
a] TRUE
b] FALSE
Ans : A

46. Dedicated server configuration is
a] One server process - Many user processes
b] Many server processes - One user process
c] One server process - One user process
d] Many server processes - Many user processes
Ans : C

47. Which of the following does not affect the size of the SGA
a] Database buffer
b] Redolog buffer
c] Stored procedure
d] Shared pool
Ans : C

48. What does a COMMIT statement do to a CURSOR
a] Open the Cursor
b] Fetch the Cursor
c] Close the Cursor
d] None of the above
Ans : D

49. Which of the following is TRUE
1] Host variables are declared anywhere in the program
2] Host variables are declared in the DECLARE section
a] Only 1 is TRUE
b] Only 2 is TRUE
c] Both 1 & 2are TRUE
d] Both are FALSE
Ans : B

50. Which of the following is NOT VALID is PL/SQL
a] Bool boolean;
b] NUM1, NUM2 number;
c] deptname dept.dname%type;
d] date1 date := sysdate
Ans : B.