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IMPORTANT
Earn 100
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.
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Important Questions on Practice Sets
MEDIUM
HSSC Clerk
IMPORTANT
In SQL, which of the following is not a data Definition Language Command?
MEDIUM
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IMPORTANT
A relation is said to be in when
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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 _____.
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IMPORTANT
If the same object name is given to different objects of different classes, then _____.
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IMPORTANT
A processor that continuously tries to acquire locks, spinning around a loop till it reaches its success, is known as _____.
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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?
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IMPORTANT
If the number of records to be sorted large and the key is short, then _____ sorting can be efficient.
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IMPORTANT
Which of the following is true about linked list implementation of stack?
