List of Major Search Engines

There are many search engines, to name a few are:
Google
Yahoo
MSN
Altavista
Alltheweb
AOL search
Hotbot
Ask
Gigablast
Live Search
Lycos
Look Smart

How search engines read a web page?

Google runs on a distributed network of thousands of low-cost computers and can therefore carry out fast parallel processing. Parallel processing is a method of computation in which many calculations can be performed simultaneously, significantly speeding up data processing.

Google has three distinct parts:
· Googlebot, a web crawler that finds and fetches web pages.
· The indexer that sorts every word on every page and stores the resulting index of words in a huge database.
· The query processor, which compares your search query to the index and
recommends the documents that it considers most relevant.

Let’s take a closer look at each part. Click Here to Download