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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
Job Role: Analyst , Database Administration , IT Trainer

27 6091
Q:

Which of the following is not a function of the Control Unit?

A) Interpret instructions B) Read instructions
C) Execute instructions D) Direct operations
 
Answer & Explanation Answer: B) Read instructions

Explanation:

Control Unit can perform the functions Interpret instructions, Execute instructions and Direct operations. But Reading instructions is not a function of the Control Unit.

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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer

13 6078
Q:

Elisa test is employed to diagnose

A) HIV B) Cancer
C) Tuberculosis D) Polio
 
Answer & Explanation Answer: A) HIV

Explanation:

ELISA - Enzyme-Linked Immuno Sorbent Assay.

test11528447143.jpg image

 

An ELISA test may be used to diagnose: HIV, which causes AIDS.

 

An ELISA also called EIA, is a test that detects and measures antibodies in your blood. Antibodies are proteins that your body produces in response to harmful substances called antigens.

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Filed Under: General Awareness
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

8 6061
Q:

That which cannot be seen -

A) Invisible B) Unseen
C) Intangible D) All of the above
 
Answer & Explanation Answer: A) Invisible

Explanation:
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Filed Under: English
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

10 6028
Q:

The depth of a complete binary tree is given by

A) Dn = log 2 (n+1) B) Dn = log 1/2 (n+1)
C) Dn = log (n+1) D) Dn = log 2 (n-1)
 
Answer & Explanation Answer: A) Dn = log 2 (n+1)

Explanation:

A complete binary tree is a binary tree where all the levels have maximum number of nodes except possibly the last level.

 

The depth of complete binary tree of n nodes will be Dn=log 2 (n+1) where Dn is the height or depth of the tree and n is the number of nodes.

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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer , Project Manager

9 6024
Q:

A line is an undefined term because it

Answer

A line is an undefined term because of it :


 


1. Contains an infinite number of points


2. can be used to create other geometric shapes


3. is a term that does not have a formal definition


 


In Geometry, unless it's stated, a line will extend in one dimension and goes on forever in both ways.

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Subject: Analytical Reasoning Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer , Project Manager

17 6019
Q:

4 45 of 259.99 = ? % of 1247.9

A) 96 B) 100
C) 78 D) 88
 
Answer & Explanation Answer: B) 100

Explanation:

Given 

4 45 of 259.99 = ? % of 1247.9

24/5 x 260 = ? x 1248/100

? = 1248 x 100/1248

? = 100.

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

6 6015
Q:

In HTML document the tags are

A) hidden keywords B) used to display the content
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Hypertext Markup Language (HTML) is the standard markup language for creating web pages and web applications.

HTML tags are the hidden keywords within a web page that define how your web browser must format and display the content. Most tags must have two parts, an opening and a closing part. For example, <html> is the opening tag and </html> is the closing tag.

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Filed Under: Web Technology
Job Role: IT Trainer

13 5995