What is Search Engine?
A Web search engine is a search engine (e.g., Google, yahoo, Alta Vista, Dog pile, Collarity, Healia, Huckbuck, Hot daddy, iBoogie, IncyWincy, Jatalla, Kahzam, Kosmix, Mojeek, Opsdo, Quintura, Scandoo, Search Medica, WebFetch, WebWobot, Whonu, WordIQ, Yurnet, Zepti, Zoo, Lycos etc.) designed to search for information on the World Wide Web. Information may consist of web pages, images and other types of files. Some search engines also mine data available in newsgroups, databases, or open directories. The search engine is a tool which helps in the retrieving information from the Internet. It is programmed in such a way what it indexes the web and accordingly builds their databases. When the query has entered in the search engine, it checks its index with the query. Then relevant matches are retrieved and returned as ‘hits’ or ‘search results’. In other words search engine acts as a searchable index of web pages of the world.
