What is an index and types of indexes. How many number of
indexes can be used per table ?

Answers were Sorted based on User's Feedback



What is an index and types of indexes. How many number of indexes can be used per table ?..

Answer / rm thirunavukkarasu

Index is used to Retrive the Information in efficient
manner. And query processor perform reliably.

There are 3 types of Index namely
*Cluster based Index
*Non Cluster based Index
*Noncomposite Index
*Compositive Index
*Unique Index

For more info adt sql plz visit www.thiruna.blog.com

Is This Answer Correct ?    8 Yes 16 No

What is an index and types of indexes. How many number of indexes can be used per table ?..

Answer / sandip kumar chaturvedi

index is a data structure that improve the operation on
table.there are two types of index.
1) ordered index.
2) hashed index.
up to 249 clustered indexes per table.

Is This Answer Correct ?    20 Yes 33 No

Post New Answer

More SQL PLSQL Interview Questions

How to load data with sql*loader?

1 Answers  


What is minus?

1 Answers  


Does sql use python?

1 Answers  


What do you mean by “trigger” in sql?

1 Answers  


What is sql integrity?

1 Answers  


a table has 2 classifications 1)liabilities 2)earnings this liabitity has 2 elements with 2 input values and the earnings have 2 elements with 2 input values i wrote a query so that my input is liability savings amount1 amount2 xxxx null xxxxxx 0 xxx1 null xxxxx1 0 null yyyy 0 yyyy null yyy1 0 yyy1 my problem is --when i developed a report(d2k) with this data my o/p is liabilities,amount1,savings,amount2 xxxx xxxxxx xxx1 xxxxx1 yyyy yyyy yyy1 yyy1 how could i move this savings,savings values 2 palces up. can any body provide me witha better solution

1 Answers   TCS,


What are the advantages of the packages

6 Answers   Oracle,


Why use triggers in sql?

1 Answers  


Store procedure will return a value?

4 Answers   eMids,


How do you concatenate in sql?

1 Answers  


Can you alter start with clause?

1 Answers   TCS,


How do you go back in sql?

1 Answers  


Categories