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Internet Search Engine

Search engines are websites which enable users to search what they want from millions of web pages around the world. Internet search engines function on a particular pattern of keyword for performing the search on World Wide Web (WWW). 

They even work according to the field of search, country, type of information, and other specifications. Today, these Internet searching tools have been incorporated with a wide range of features such as quick search, previews, direct access, etc.

Internet search engines function as per many factors such as the country from which the data is to be retrieved, the field and type of data such as business, law, real estate, education, health care, lifestyle, entertainment, etc. 

There are even search engines for finding multimedia data, maps, cost estimates and pricing, torrents, etc. Websites dedicated to these particular fields perform search in their own categories for data.

How web search engines work

A search engine operates in the following order:
  • Web crawling
  • Indexing
  • Searching
Web search engines work by storing information about many web pages, which they retrieve from the HTML itself. These pages are retrieved by a Web crawler (sometimes also known as a spider) — an automated Web browser which follows every link on the site. Exclusions can be made by the use of robots.txt. 

The contents of each page are then analyzed to determine how it should be indexed (for example, words are extracted from the titles, headings, or special fields called meta tags). Data about web pages are stored in an index database for use in later queries. A query can be a single word. The purpose of an index is to allow information to be found as quickly as possible.

When a user enters a query into a search engine (typically by using keywords), the engine examines its index and provides a listing of best-matching web pages according to its criteria, usually with a short summary containing the document's title and sometimes parts of the text. The index is built from the information stored with the data and the method by which the information is indexed.

Popular Internet Search Engines List

Google search engine is no doubt the best search engine used by majority of people around the world. The best thing about this website is that it has a very clear and simple interface, without advertisements and other icons and designs.

This widely used web utility is also considered to be the fastest. Besides, it keeps on updating its logo on any special occasion such as a festival, a birthday of a renowned personality, or simply a day of invention. It is the first website to offer instant search to users, which is referred to as Google Instant. This unique feature includes displaying results as you type.

Bing is owned by Microsoft Corporation, and is considered the closest competitor to Google. It was made available to Internet users on June 3, 2009. To make the competition tougher, Microsoft entered into a contract with Yahoo, regarding Yahoo search engine being replaced by Bing.

Like the Google interface, this website is simple; but with daily changing of beautiful background wallpapers. Just like Google, it has the preview facility, wherein the user can view a snap of the webpage without opening it.

Yahoo is another web search engine which ranks second. Contrary to the simple and uncluttered search interface of Google and Bing, Yahoo has a homepage that houses loads of entertainment information. You can read news, browse through the latest articles around the world, play games, check out jobs, and access many other features on the homepage itself.

The results displayed on the search page by Yahoo is powered by Bing, as per the above mentioned deal. A very useful feature implemented is 'SearchScan' which automatically alerts users in case of computer viruses and spam websites search results.



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