Search Engine:–
A web search engine is designed to search for information on the WWW and FTP servers.
The search results are generally presented in list of result and are often called hits.
The information may consist of web pages, images, information, and other types of files.
Some search engines also mine data available in database or open directories.
Search engines work by storing information about many web pages, which they retrieve from the HTML it self.
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 according to its criteria.
Most search engines support the use of Boolean operator AND, OR, and NOT.
Some search engines, such as GOOGLE, store all or part of the source page as well as information about the web pages.
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