info about search engines
A search engine or search service is a program designed to help find information stored on a computer system such as the world wide web (WWW), inside a corporate or proprietary network or a personal computer.Without further qualification, search engine usually refers to a web search engine, which searches for information on the public web.
The search engine allows one to ask for content meeting specific criteria (typically those containing a given word or phrase) and then it retrieves a list of references that match those criteria. Search engines use regularly updated indexes to operate quickly and efficiently, also, some web search engines use web-directories as indexes for finding informations.
To learn more about the most important web search engines specifically, follow these links:
relevant books about search engines
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