How Search Tools Works?
Explanation is here bellow ....!!
The Web can be incredible resource, providing information on nearly any topic imaginable. Are you planning a trip? Writing an economics paper? Looking for a movie review? Trying to locate a long-lost friend? Information sources related to these questions, and much, much more, are available on the web. With over 20 Billions pages and more being added daily, the web is a massive collection of interrelated pages. With so much available information, locating the precise information you need can be difficult. Fortunately, a number of organizations called search services operate Web sites that can help you locate information you need. They maintain huge databases relating to information provided on the web and the Internet.
The information stored at these databases includes addresses, content descriptions or classifications, and keywords appearing on Web pages and other Internet Informational resources. Special Programs called Spiders continually look for new information and update the search services’ databases. Additionally, search services provide special programs called search engines that you can use to locate specific information on the web.
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