Question 1 |

If A is a skew symmetric matrix then A^{t} is

Diagonal matrix | |

A | |

0 | |

-A |

Question 1 Explanation:

Question 2 |

Let A and B be any two arbitrary events, then, which one of the following is TRUE?

P(A \cap B)=P(A) P(B) | |

P(A \cup B)=P(A)+P(B) | |

P(A \mid B)=P(A \cap B) P(B) | |

P(A \cup B) \leq P(A)+P(B) |

Question 2 Explanation:

Question 3 |

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

2.222 | |

2.275 | |

2.279 | |

None of the above |

Question 3 Explanation:

Question 4 |

What does a data dictionary will identify?

Field name | |

Field format | |

Field types | |

All of the above |

Question 4 Explanation:

Question 5 |

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

Time stamp ordering | |

2 Phase locking | |

Both (A) and (B) | |

None of the above |

Question 5 Explanation:

Question 6 |

ACID properties of a transactions are

Atomicity, consistency, isolation, database | |

Atomicity, consistency, isolation, durability | |

Atomicity, consistency, integrity, durability | |

Atomicity, consistency, integrity, database |

Question 6 Explanation:

Question 7 |

\begin{array}{|l|l|l|l|l|} \hline \textbf{Employee} & \textbf{Department} & \textbf{OT allowance} \\ \hline \text{RAMA} & \text{Mechanical} & \text{5000} \\\hline \text{GOPI} & \text{Electrical} & \text{2000} \\\hline \text{SINDHU} & \text{Computer} & \text{4000} \\\hline \text{MAHESH} & \text{Civil} & \text{1500} \\\hline \end{array}

What is the output of the following SQL query?

What is the output of the following SQL query?

```
select count(*) from
((select Employee, Department from Overtime_allowance)
natural join
(select Department, OT_allowance from Overtime_allowance)
as T);
```

16 | |

4 | |

8 | |

None of the above |

Question 7 Explanation:

Question 8 |

Which symbol denote derived attributes in ER Model?

Double ellipse | |

Dashed ellipse | |

Squared ellipse | |

Ellipse with attribute name underlined |

Question 8 Explanation:

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:

{1,3,5,6,7,8} | |

{2,4,9} | |

{2,4} | |

{1,2,3,4,5,6,7,8,9} |

Question 9 Explanation:

Question 10 |

The problem 3-SAT and 2-SAT are

both in P | |

both NP complete | |

NP -complete and in P respectively | |

undecidable and NP complete respectively |

Question 10 Explanation:

There are 10 questions to complete.