Search Engine, Its Working and Types-I

Hello friends we again here with a new and interesting topic i.e Search Engine. In many universities exam there is questions about Search Engine like What is search Engine their types Types,How Search Engine works and so many things. In Internet Application subject or Networking Exam you usually find question regarding search engine.

Apart from this we usually use Google as searching application but do we know how it works. So today's post we'll  try to explore the answer of following question:-

1. Definition of search engine
2. History of search engine
3. Working
4. Web crawler

Definition of Search Engine

• Search engine is software system designed to search information on www.
• Search engine consists of server and collection of a server.
• Server stores the link of various internet resources like webpages, images, programs etc.
• Works with the help of web crawler. 

History of Search Engine 

Here brief history regarding search engine is displayed.you can know more about it through google.

• Wandex is first search engine developed in 1993 by Matthew Gray
• In 1993 martin Koster created Aliweb search engine and still in use
• Lycos is first commercial engine started at Carnegie Mellon University as research project in 1994
• After that  Web crawler, Hotbot, Excite infoseek, inktomi, Northern light and AltaVista etc. introduce.
• In 1998 goggle is introduced by Larry Page & Sergey Brin.

Previously Used Search Engine

In the below picture three different previously search engine is shown i.e Wandex, Lycos and Archie Query Form but now days Google is considered as Knowledge hub.

Working of Search Engine

• Search Engine looks for the keyword in the index from the already constructed database 
• Then web crawler visit link to link where keyword exist and pass to database
• After completion of search database returns list of result that include URL, title of page, few lines of description

For more clearence see the following video 

I hope now you would know about search engine working and their architecture clearly.

Web Crawler

• Web crawler is a software that gathers the information in database
• It is also known as web spider /  web ant / robots or bots
• It travels across the www by following  the several links
• Pass this  engine’s indexing software

For more details regarding search engine must read our next post Search Engine, Its Working and Types-II that contain some more interesting fact and information.

Good Bye & Have a Nice Day!!!!!!!!!!!!