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Q:

What is the maximum number of triggers, can apply to a single table?

A) 8	B) 10
C) 12	D) 14

Answer & Explanation Answer: C) 12

Explanation:

Maximim number of triggers that can be applied to a single table is 12

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Filed Under: Oracle Certification
Job Role: Database Administration

Q:

In how many ways a committee, consisting of 5 men and 6 women can be formed from 8 men and 10 women?

A) 53400	B) 17610
C) 11760	D) 45000

Answer & Explanation Answer: C) 11760

Explanation:

Required number of ways = $(8 C_{5} * 10 C_{6})$ = $(8 C_{3} * 10 C_{4})$ = 11760

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Filed Under: Permutations and Combinations

Q:

There are 7 non-collinear points. How many triangles can be drawn by joining these points?

A) 10	B) 30
C) 35	D) 60

Answer & Explanation Answer: C) 35

Explanation:

A triangle is formed by joining any three non-collinear points in pairs.

There are 7 non-collinear points

The number of triangles formed = $7 C_{3}$ = 35

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Filed Under: Permutations and Combinations

Q:

Does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?

A) Yes	B) No
C) May be Yes or No	D) None

Answer & Explanation Answer: B) No

Explanation:

No.Minimal spanning tree assures that the total weight of the tree is kept at its minimum. But it doesn’t mean that the distance between any two nodes involved in the minimum-spanning tree is minimum.

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Filed Under: Database
Job Role: Database Administration

Q:

What are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms?

A) Polish	B) Reverse Polish
C) Both A and B	D) None of the above

Answer & Explanation Answer: C) Both A and B

Explanation:

Polish and Reverse Polish are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms

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Filed Under: Database
Job Role: Database Administration

Q:

If you are using C language to implement the heterogeneous linked list, what pointer type will you use?

Answer

The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type.

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Subject: Database Exam Prep: GATE
Job Role: Database Administration

Q:

There are fourteen juniors and twenty-three seniors in the Service Club. The club is to send four representatives to the State Conference. If the members of the club decide to send two juniors and two seniors, how many different groupings are possible ?

A) 23024	B) 24023
C) 23023	D) 25690

Answer & Explanation Answer: C) 23023

Explanation:

Choose 2 juniors and 2 seniors.

$14 C_{2} * 23 C_{2} = 23023$

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Filed Under: Permutations and Combinations

Q:

It is necessary to sort a file before searching a particular item

A) True	B) False
C) May or may not be true	D) None of the above

Answer & Explanation Answer: C) May or may not be true

Explanation:

If less work is involved in searching a element than to sort and then extract, then we don’t go for sort

If frequent use of the file is required for the purpose of retrieving specific element, it is more efficient to sort the file.

Thus it depends on situation

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Filed Under: Database
Job Role: Database Administration

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