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For the following questions answer them individually
Armstrong’s inference rule doesn’t determine
Refiexivity
Augmentation
Transitivity
Mutual dependency
Which operation is used to extract specified columns from a table?
Project
Join
Extract
Substitute
In the Big-Endian system, the computerstores
MSB of data in the lowest memory addressof data unit
LSB of data in the lowest memory addressofdata unit
MSB of data in the highest memory addressof data unit
LSB of data in the highest memory addressof data unit
BCNFis not used for cases where a relation has
Two (or more) candidate keys
Two candidate keys and composite
The candidate key overlap
Two mutually exclusive foreign keys
Selection sort aigorithm design technique is an example of
Greedy method
Divide-and-conquer
Dynamic Programming
Backtracking
Which ofthe following RAID level provides the highest Data Transfer Rate (Read/Write)
RAID 1
RAID 3
RAID 4
RAID 5
Whichofthe following programming language(s) provides garbage collection automatically
Lisp
$$C_{++}$$
Fortran
C
The Average case and worst case complexities for Merge sort algorithm are
$$O(n^{2}),O(n^{2})$$
$$O(n^{2}),O(n \log_{2} n)$$
$$O(n \log_{2}n),O(n^{2})$$
$$O(n \log_{2}n), O(n \log_{2}n)$$
The time taken by binary search algorithm to search a keyin a sorted array of n elementsis
$$O(\log_{2}n)$$
$$ O(n) $$
$$ O(n \log_{2}n) $$
$$ O(n^{2}) $$
Which of the following is correct with respect to Two phase commit protocol ?
Ensures serializability
Prevents Deadlock
Detects Deadlock
Recover from Deadlock
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