ISRO Scientist or Engineer Computer Science May 2017

Instructions

For the following questions answer them individually

Question 1

If A is a skew symmetric matrix, then $$A^t$$

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Question 2

If A and B be two arbitrary events, then

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Question 3

Using Newton-Raphson method, a root correct to 3 decimal places of the equation $$x^{3} - 3x - 5 = 0$$

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Question 4

What does the data dictionary identify?

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Question 5

Which of the following concurrency control protocol ensures both conflict serializability and free from deadlock?

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Question 6

ACID properties of a transactions are

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Question 7

Database table by name Overtime_allowance is given below :


What is the output of the following SQL query?
select count(*) from ((select Employee, Department from Overtime_allowance) as S natural join (select Department, OT_allowance from Overtime_allowance) as T);

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Question 8

Which symbol denote derived attributes in ER Model?

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Question 9

The symmetric difference of sets A = {1, 2, 3, 4, 5, 6, 7, 8} and B = {1, 3, 5, 6, 7, 8, 9} is

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Question 10

The problems 3-SAT and 2-SAT are

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