How Search Engines indexing work?

[mackhunt88]

Can anybody describe how Search Engines' indexing work?
when they comes ?
How they collect data?
How they put their on servers?

[bposervices]

There are differences in the ways various search engines work, but they all perform three basic tasks:

* They search the Internet -- or select pieces of the Internet -- based on important words.
* They keep an index of the words they find, and where they find them.
* They allow users to look for words or combination of words found in that index.

[mesasa]

No one EXACTLY knows how and WHEN they come and go. We just know that they crawl websites depending on the structure of your website, your content, etc.