Indexing

When files are added to the computer their key contents like their file name, tags , other attributes and in some cases their content are added to an index. It is far quicker to search an index of the information than it is to search each file when you want to find information. Windows Vista was the first Windows operating system to include full indexing of files and that is why searching for information in Vista is so much faster. Google and other search engines work on the same principal but on a broader scale for the Internet. A person adds content to their website and then Google is always looking, using software called bots, and when it finds new content it adds it to its index. Once again it is significantly faster to search an index than to search every word of the file. Imagine if Google did not use indexes and each time you wanted to find something every page on the Internet had to be searched - it would take weeks.