MIS-search engine

hello....how are u today??okay..today I want to share with u about the 'search engine'..u know about the search engine??what u understand about the search engine??if u didn't know..i want to share with u about the search engine..okay..let me start..


Search engine are program that search documents for specified keywords and returns a list of the documents where the keywords were found. A search engine is really a general class of programs, however, the term is often used to specifically describe systems like Google, Bing and Yahoo! Search that enable users to search for documents on the World Wide Web.

Typically, Web search engines work by sending out a spider to fetch as many documents as possible. Another program, called an indexer, then reads these documents and creates an index based on the words contained in each document. Each search engine uses a proprietary algorithm to create its indices such that, ideally, only meaningful results are returned for each query.

A web search engine is designed to search for information on the World Wide Web. The search results are generally presented in a line of results often referred to as search engine result pages (SERPs). The information may be a specialist in web pages, images, information and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories, which are maintained only by human editors, search engines also maintain real-time information by running an algorithm on a web crawler.

A web search engine that familiar in our life is google, yahoo!, bing,msn, AOL and ASK.