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Database Administration Questions

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Q:

Which of the following are elements of SQL?

A) base-table-identifier ::= user-defined-name B) base-table-name ::= base-table-identifier
C) boolean-primary ::= comparison-predicate D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: Oracle
Job Role: Analyst , Database Administration , IT Trainer

8 5841
Q:

Which of the following type casts will convert an Integer variable named amount to a Double type ?

A) (int to double) amount B) int (amount) to double
C) int to double(amount) D) (double) amount
 
Answer & Explanation Answer: D) (double) amount

Explanation:
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Filed Under: C++
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6 5834
Q:

How many laws of physics are there?

A) 5 B) 4
C) 3 D) 2
 
Answer & Explanation Answer: C) 3

Explanation:

Physics has 5 laws. But the 3 laws of Newton has been clubbed together under one Law. Therefore there are 3 Newtons laws of Physics. They are ::

 

1. Newtons Laws of Motion

    a. First Law of Motion

    b. Second Law of Motion

    C. Third Law of Motion

 

2. Newtons Law of Cooling

 

3. Newtons Law of Gravitation.

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Filed Under: Physics
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10 5804
Q:

What is the probability of an impossible event?

A) 0 B) -1
C) 0.1 D) 1
 
Answer & Explanation Answer: A) 0

Explanation:

The probability of an impossible event is 0.

The event is known ahead of time to be not possible, therefore by definition in mathematics, the probability is defined to be 0 which means it can never happen.

 

The probability of a certain event is 1.

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Filed Under: Probability
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17 5797
Q:

Find the compound interest on Rs. 6,500 for 4 years if the rate of interest is 10% p.a. for the first 2 years and 20% per annum for the next 2 years? 

A) Rs. 3845 B) Rs. 4826
C) Rs. 5142 D) Rs. 4415
 
Answer & Explanation Answer: B) Rs. 4826

Explanation:

We know the formula for calculating

The compound interest C = P1 + r100n - 1 where P = amount, r = rate of interest, n = time

Here P = 5000, r1 = 10, r2 = 20

Then C = 65001 + 101002 x 1 + 201002 - 1= 6500 x 18562500= 65 x 185625

C = Rs. 4826.

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Filed Under: Compound Interest
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20 5733
Q:

By default, a Linux user falls under which group?

A) same as userid (UPG) B) system
C) staff D) others
 
Answer & Explanation Answer: A) same as userid (UPG)

Explanation:

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel. By default, a Linux user falls under same as userid (UPG) group.

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Filed Under: Operating Systems
Job Role: Database Administration , IT Trainer

47 5722
Q:

A collection of interrelated records is called a

A) Datasheet B) Spreadsheet
C) Database D) Utility File
 
Answer & Explanation Answer: C) Database

Explanation:
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Filed Under: Database
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5 5675
Q:

English words with similar meaning

A) Relegate - Downgrade B) Beautiful - Ugly
C) Qualm - Confidence D) Generic - Branded
 
Answer & Explanation Answer: A) Relegate - Downgrade

Explanation:

Relegate means Assigning an inferior rank or position to. That means, downgrading or pulling down, lower a person.

 

All other options have words with opposite in meaning.

 

Hence, Relegate is an English word which is similar in meaning to Downgrade.

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Filed Under: English
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9 5674