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Q:

Data integrity constraints are used to

A) Ensure that duplicate records are not entered into the table B) Prevent users from changing the values stored in the table
C) Control who is allowed access to the data D) Improve the quality of data entered for a specific property like table column
 
Answer & Explanation Answer: D) Improve the quality of data entered for a specific property like table column

Explanation:

Integrity constraints are used to ensure accuracy and consistency of data in a relational database. Data integrity is handled in a relational database through the concept of referential integrity. Many types of integrity constraints play a role in referential integrity (RI).

 

Hence, Data integrity constraints are used to Improve the quality of data entered for a specific property i.e, table column.

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Filed Under: Oracle Certification
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Q:

After the decline of the Chalukya kingdom of Kalyani at the close of the 12th and of the chola kingdom at the begining of the 13th century, the new kingdom which arose in South India were

A) Yadavas of Devagiri and Kakatiyas of Warangal B) Hoysalas of Dwarsamudra and Pandyas of Madurai
C) Vijayanagar and Bahamani kingdoms D) Both (a) and (b)
 
Answer & Explanation Answer: D) Both (a) and (b)

Explanation:
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Filed Under: Indian History

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Q:

Which of the following is not an enzyme?

A) Oxytocin B) Trypsin
C) Pepsin D) Ptyalin
 
Answer & Explanation Answer: A) Oxytocin

Explanation:

Oxytocin is a mamallian hormone and also acts as neuro transmitter in the brain.

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Filed Under: Biology
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Q:

Size of the primary memory of a pc ranges between

A) 256 kb to 640 kb B) 64 kb to 256 kb
C) 256 kb to 512 kb D) 2 kb to 8 kb
 
Answer & Explanation Answer: A) 256 kb to 640 kb

Explanation:

Size of the primary memory of a PC ranges between 256 KB to 640 KB.

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Q:

Which of the following is an example of continous emission spectrum?

A) Spectrum of an oil frame B) Spectrum of a water
C) both D) none
 
Answer & Explanation Answer: A) Spectrum of an oil frame

Explanation:

Spectrum of an oil frame is an example for continuous emission spectrum

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Filed Under: Physics

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Q:

A series of fast moving still pictures can be made to appear as a moving picture because the eye 

A) can focus very rapidly as pictures change B) is quicker than the brain
C) can see 2 images separated only if the interval betwen seeing them is more than one-tenth of a second D) can shut out some of the light
 
Answer & Explanation Answer: C) can see 2 images separated only if the interval betwen seeing them is more than one-tenth of a second

Explanation:

The eye can see images separately only if they are exhibited at an interval of more than 1/10 of a second. In the case of a movie, the still pictures come one after the other at less than this minimum interval. So we do not see them separately but only as a continuous moving picture.

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Filed Under: Physics

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Q:

What term is used for initiation into Sikhism?

Answer

Pahul

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Subject: Indian Culture

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Q:

Which superhero shares a name with a town in Turkey?

A) Batman B) Spiderman
C) Ironman D) None of the above
 
Answer & Explanation Answer: A) Batman

Explanation:

Superhero Batman shares a name with an oil production Batman, a town in Turkey.

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Filed Under: General Awareness
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