- ?Spiders? and ?bots? are automated programs that are executed by search engines. These programs dwell on the hyperlink structure of the web pages to crawl on them. So far millions of existing web pages have been crawled by search engines.
- After a web page is crawled its content are indexed and then stored in the database of documents. These indexed documents are managed in way that it retrieves the exact search results from the millions of documents in seconds.
- Whenever any visitor searches the search engine for any information, it gets back with results that match the query after indexing all the documents. The search engine match is determined in the manner in which it is entered by the user. For instance- any visitor searching by keywords will get the results that have this key phrase and all three terms.
- The ranking results of search engines are based on the keywords selection and their placement. After the search engines decides on the results, the algorithms does calculations on each and every search results and gives the most appropriate ones.
Major search engines manage such millions of calculations every second and yield the results.
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For any website the navigation links have to be clear and well defined. But some types of navigation poses obstacle for search engines to get to your website content. The architecture of hyperlinks helps in locating new documents on which the search engine spiders crawl. Websites with complex links and deeper site structures act as ?bumps? and links that cannot be accessed by search engine spiders are known as ?walls?.
As seen, the commercial search engines work on the basis of scientific data from Information retrieval. Relevancy of any document is enhanced if it contains the keywords/phrases in it and it occurs many times in the document. It should cover important content places like headlines, title, home page, etc.
The popularity level of website also helps in determining its success. Whenever any document is referred by another document, its popularity and value increases.
SEO is a very larger concept in itself and this was a simple attempt to make you aware of initial things that goes into search engine optimization.
