11.
Consider the following ORACLE relations:

R(A,B,C) =
{<1,2,3>, <1,2,0>, <1,3,1>, <6,2,3>, <1,4,2>,
<3,1,4>}

S(B,C,D) =
{<2,3,7>, <1,4,5>, <1,2,3>, <2,3,4>, <3,1,4>}

Consider the
following two SQL queries SQ

_{1}and SQ_{2}:
SQ

_{1}: SELECT R.B, AVG(S.B)
FROM R, S

WHERE R.A =
S.C AND S.D < 7

GROUP BY
R.B;

SQ

_{2}: SELECT DISTINCT S.B, MIN (S.C)
FROM S

GROUP BY S.B

HAVING COUNT
(DISTINCT S.D) > 1;

If M is the
number of tuples returned by SQ

_{1}and N is the number of tuples returned by SQ_{2}then
(A) M=4, N=2 (B) M=5, N=3

(C) M=2, N=2 (D) M=3, N=3

Answer: A

12. Semi-join
strategies are techniques for query processing in distributed database system.
Which of the following is a semi-join technique?

(A) Only the
joining attributes are sent from one site to another and then all of the rows
are returned.

(B) All of
the attributes are sent from one site to another and then only the required
rows are returned.

(C) Only the
joining attributes are sent from one site to another and then only the required
rows are returned.

(D) All of
the attributes are sent from one site to another and then only the required
rows are returned.

Answer: C

13. Consider
the Breshenham’s circle generation algorithm for plotting a circle with centre
(0,0) and radius ‘r’ units in first quadrant. If the current point is (x

_{1},y_{1}) and decision parameter is p_{i}then what will be the next point (x_{i+1},y_{i+1}) and updated decision parameter p_{i+1}for p_{i }≥ 0
(A) x

_{i+1}= x_{i }+ 1 y_{i+1}= y_{i}p_{i+1}= p_{i }+ 4x_{i }+ 6
(B) x

_{i+1}= x_{i }+ 1 y_{i+1}= y_{i}- 1 p_{i+1}= p_{i }+ 4(x_{i}- y_{i})_{ }+ 10
(C) x

_{i+1}= x_{i}y_{i+1}= y_{i}- 1 p_{i+1}= p_{i }+ 4(x_{i}- y_{i})_{ }+ 6
(D) x

_{i+1}= x_{i }- 1 y_{i+1}= y_{i}p_{i+1}= p_{i }+ 4x_{i }+ 10
Answer: B

14. A
point P(5,1) is rotated by 90

^{0}about a pivot point (2,2). What is the coordinate of new transformed point P’ ?
(A) (3,5) (B) (5,3)

(C) (2,4) (D) (1,5)

Answer: A

15. Let
R be the rectangular window against which the lines are to be clipped using 2D
Sutherland-Cohen line clipping algorithm. The rectangular window has lower
left-hand corner at (-5,1) and upper right-hand corner at (3,7). Consider the
following three lines for clipping with the given end point co-ordinates:

Line AB:
A(-6,2) and B(-1,8)

Line CD:
C(-1,5) and D(4,8)

Line EF:
E(-2,3) and F(1,2)

Which of the
following line(s) is/are candidate for clipping?

(A) AB (B) CD

(C) EF (D) AB and CD

Answer: D

16. In
perspective projection, if a line segment joining a point which lies in front
of the viewer to a point in back of the viewer is projected to a broken line of
infinite extent. This is known as ...................

(A) View
confusion (B) Vanishing
point

(C)
Topological distortion (D)
Perspective foreshortening

Answer: C

17. Let
us consider that the original point is (x,y) and new transformed point is (x’,y’).
Further, Sh

_{x}and Sh_{y}are shearing factors in x and y directions. If we perform the y-direction shear relative to x=x_{ref}then the transformed point is given by ............
(A) x’ = x +
Sh

_{x}. (y - y_{ref}) y’ = y
(B) x’ = x y’ = y . Sh

_{x}
(C) x’ = x y’ = Sh

_{y}(x - x_{ref}) + y
(D) x’ = Sh

_{y}. y y’ = y . (x - x_{ref})
Answer: C

18. Which
of the following statement(s) is/are correct with reference to curve
generation?

I. Hermite
curves are generated using the concepts of interpolation.

II. Bezier
curves are generated using the concepts of approximation.

III. The
Bezier curves lies entirely within the convex hull of its control points.

IV. The
degree of Bezier curve does not depend on the number of control points.

(A) I, II
and IV only (B) II and
III only

(C) I and II
only (D)
I, II and III only

Answer: D

19. Given
the following statements:

(a) To
implement Abstract Data Type, a programming language require a syntactic unit
to encapsulate type definition.

(b) To
implement ADT, a programming language requires some primitive operations that
are built in the language processor.

(c) C++,
Ada, Java 5.0, C#2005 provide support for parameterised ADT.

Which one of
the following options is correct?

(A) (a), (b)
and (c) are false.

(B) (a) and
(b) are true; (c) are false.

(C) (a) is
true; (b) and (c) are false.

(D) (a), (b)
and (c) are true.

Answer: D

20. Match
the following types of variables with the corresponding programming languages:

(a) Static
variables (i) Local
variables in Pascal

(b) Stack
dynamic (ii) All variables
in APL

(c) Explicit
heap dynamic (iii) Fortran 77

(d) Implicit
heap dynamic (iv) All objects in
JAVA

**Codes:**

(a) (b) (c)
(d)

(A) (i) (iii) (iv) (ii)

(B) (iv) (i) (iii)
(ii)

(C) (iii) (i) (iv)
(ii)

(D) (ii) (i) (iii)
(iv)

Answer: C

## 0 Comments