What is index

[aqzseo]

can any one tell me what is the index

[infoman66]

An index is a system used to make finding information easier...
Index may also refer to different things.
In the web hierarchy, index is the main page, the default page in the directory...

[Aqua]

index is a process of search engines which collect the information of your website, including the inner pages of your website are stored to them, then if your keyword is searched there's a possibility that your website will appear on every searches...

[indolokbaktiutama]

I think index is the list of website name in search engine site.

[IT Staffing]

A numerical scale used to compare variables with one another or with some reference number.

[bardmirna]

Index is similar to the idea that your site is being saved or approved in google of giving your site a chance to rank in the SERP and Page rank.

[milllsgerry]

Index is a numerical scale used to compare variables with one another or with some reference number.Index selectivity is a number the determines the effectiveness of index.A type of mutual fund with a portfolio constructed to match or track the components of a market index.