How Do Search Engines Work?

Search engines are specialized sites that stores the documents and url's of the websites submitted to it's database. Sites like yahoo and google uses different kinds of softwares(called wandere, crawler, robot, worm, spider) which searches the web and stores the documents and files in it's database. When you perform your search, search engines will find the keywords you input that match the files stored in it's database.

The following are the steps how search engines work:
1. Search engines uses softwares which searches the web and stores the documents and files in it's database.

2. Documents and url's are collected to the search engines database.
3. Indexing softwares extract the informtion from the database.
4. When you input the keywords to the search engine, the database is searched for the document or file that matches the keyword.
5. The search engine arranges the list of web pages that contains the file matching the keyword you input, starting from the highest ranked website.