A thorough investigation of exactly what search engines are and how they work is very important to consider before actually registering a website. Although we have come to think of search engines as giant applications that find information, a search engine is really three different applications that work together to find and retrieve content. The applications include:
Indexer – The back-end application that finds and indexes pages for inclusion in a database; other names for this type of application include spider, robot, and crawler.
Database – Stores the index references to web pages.
Query Interface – Handle the questions submitted by users.
Search engines aren’t able to find or index websites without some help, which is why people choose to register their sites. Another way for a search engine to locate a website is through a link to an actual page on the site from someone else’s site. After a search engine finds a site, it uses the links within the pages to find additional pages within the site. In this way, the search engine navigates its way through a website one link at a time and adds the information from the website into its database.
Search engines do not always store all the data in a web page. As an alternative, they create indexed references to the pages. Majority of the time, such an indexed reference contains the following information:
Page Title
Page URL
Summary Description
Keyword List
(Referenced from Increase Your Web Traffic in a Weekend: 5th Edition by Jerry Lee Ford, Jr. and William R. Stanek)
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