HARD
HSSC Clerk
IMPORTANT
Earn 100

Implicit and Explicit cursor has attribute
(a)
(b)
(c)
(d)All of these
(e)None of these

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Important Questions on Practice Sets
HARD
HSSC Clerk
IMPORTANT
Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

HARD
HSSC Clerk
IMPORTANT
Suppose a relation R is in three NF. Then an FD: is not valid on R, if:
I. is a proper subset of some keys.
II. is not a proper subset of any key.
III. is a key.
IV is part of some key.

MEDIUM
HSSC Clerk
IMPORTANT
In SQL, which of the following is not a data Definition Language Command?

MEDIUM
HSSC Clerk
IMPORTANT
A relation is said to be in when

MEDIUM
HSSC Clerk
IMPORTANT
A major goal of the database system is to minimize the number of block transfers between the disk and memory. This is achieved by _____.

HARD
HSSC Clerk
IMPORTANT
If the same object name is given to different objects of different classes, then _____.

HARD
HSSC Clerk
IMPORTANT
A processor that continuously tries to acquire locks, spinning around a loop till it reaches its success, is known as _____.

HARD
HSSC Clerk
IMPORTANT
The lexical analysis for a modern computer language such as Java needs the power of which one of the following machine models in a necessary and sufficient sense?
