UGC NET COMPUTER SCIENCE SOLVED PAPER SET-2
21. Find the suitable match for
the following:
List – I List –
II
A. DDL i. Rename
B. DML ii. Select
C. BASIC Operation iii. Set
Difference
D. BINARY Operation iv. Drop
(a) A- ii, B-I, C- iii, D- iv (b)
A- I, B- ii, C- iv, D- iii
(c)
A-iv, B- ii, C- iii, D- i (d) A- iv, B- ii, C- i, D- iii
Ans.:d
22. Specialization Lattice stands
for
(a) An entity type can
participate as a subclass in only one specialization.
(b) An entity type can
participate as a subclass in more than one specialization.
(c) An entity type that can
participate in one specialization.
(d)
An entity type that can participate in one generalization.
Ans.:b
23. Overlay is
(a) a part of an operating system
(b) a specific memory location
(c) a single contiguous memory
that was used in the olden days for running large programs byswapping.
(d)
overloading the system with many user files.
Ans.:c
