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Q:

India has ranked _____ rank in World Bank's 'Ease of doing business' index.

A) 100 B) 101
C) 99 D) 102
 
Answer & Explanation Answer: A) 100

Explanation:
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Filed Under: Indian Economy
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

Q:

What is an Index? Explain how to create an Index.

Answer

An index is a object which is used to improve performance during retrieval of records.


CREATE [UNIQUE] INDEX index_name 


ON employee[emp_id, emp_name,dept_id]


[COMPUTE STATISTICS]


The UNIQUE keyword is used when combined values of the index should be unique.


The COMPUTE STATISTICS during the creation of index optimizes the plan of execution of the SQL statement and improves performance.

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Subject: Oracle

Q:

Can we use include ("xyz.PHP") two times in a PHP page "index.PHP"?

Answer

    Yes we can use include("xyz.php") more than one time in any page. but it create a prob when xyz.php file contain some funtions declaration then error will come for already declared function in this file else not a prob like if you want to show same content two time in page then must incude it two time not a prob

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Subject: PHP

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion (A)  :  Diamond is used for cutting glass. 

Reason (R)     :  Diamond has a high refractive index. 

A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false. D) A is false but R is true.
 
Answer & Explanation Answer: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

Diamond is very hard due to its rigid three dimensional structure and so, it is used for cutting glass. Refractive index of diamond is high and gives it the greater transparency and brilliance. 

 

 

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Filed Under: Assertion and Reason