As quickly and efficiently find the data on the Internet That the internet — it’s a real Klondike very different information , even the children know . Whatever question we are not interested — almost always we are looking for right answer on the web. Choose your TV , go on vacation , send a child to school, buy a car, write the essay or dissertation , make repairs , find a life partner or have a light novel, the weather forecast , watch a football match or listen to music — that’s just a small list of what interested the average Internet user . The Internet has everything , you just have to know how to look. Next we will explain how to correctly perform the search for interesting information on the web. Based on what the search engines work ? To be able to quickly and accurately search for particular information , it is necessary at least in general terms, to understand the principle on which modern search engines operate . Search engine — is a kind of software system that provides the required data search on the web. Operation of the search engine is based on periodic viewing web resources, and automatic registration of detected changes to them . These are the kind of information the foundation on which the database is formed with links to web resources. In the process of building a database search engine and fixes a number of additional components, features and factors — for example, the frequency of occurrence of words on the page , its layout, how many references to this resource is available on other web pages , etc. All of this information in any way taken into account in the implementation of the search . Since the available data should be updated periodically , search engines at regular intervals again browsing previously visited web resources, and record all changes appeared . For example, consider how the world-famous robot search engine is Google. When he looks at a Web resource , the first thing he asked what words and in what places webpage he finds .