Search Engine Indexing

How are search engine queries interpreted and processed, relevant results qualified, sorted and presented to a search engine user within a second? The internet is a vast and search engines would be unable to produce accurate, quick responses if they did not 'prepare' in advance. This preparation is carried out by programs known as 'spiders' that continually browse the web, creating copies of all webpages visited following inter and intra links.

The contextual data included in these copied webpages undergoes a text-based analysis so that the search engine understands the theme and the scope of the website. This information is then stored in search engine databases to facilitate fast and accurate indexing when a search engine user searches for a contextually similar keyword or phrase.

The princple base for accurate, relevants search engine indexing is text-based.