The success of any website depends on its appearance in search engine result pages. There are many search engines such as Google, Yahoo, MSN, AltaVista, HotBot and many more. These search engines give information to the net users from their large databases.
Search Engines – How it Works
Though many people use internet frequently and also use search engine regularly for finding information may not know exactly what search engine is and how it works.
Search Engines are automated software program that uses various programming techniques which is known as search engine robots or spiders or crawlers. Search engines use these spiders to collect information for internet users from their databases.
While we submit website in search engine, these programs collects all necessary information from web pages and store in its database. The basic information store in database is such as domain name, keywords, page title etc.
When internet user search for any particular information, these spiders starts works to collect information, they give importance to keywords, domain name, page title, keyword density, relevancy of web page content with keywords etc. It prepares indexes of these data on bases of your search word. From these search indexes search engines prepares results and rank the pages base on the criteria for deciding page rank.
Search engines keep secrets their search methods for security and to prevent techniques from their competitors. Although basic search process are common for all search engines, you can find different search result for same search in different search engines as each search engine use their own search methods.The basic steps follow by search engine spiders :
- Net user type a query into a search engine.
- Search engine spiders/robots promptly sorts data from millions of pages in its database to find most suitable matches for user’s query.
- On the basis of relevancy, page ranks are decided for preparing search engine result pages.
While preparing search engine result pages, search engines spiders consider following information in websites :
- Term frequency
- Location of terms
- Date of Publication
- Link analysis
- Popularity
- Length
- Proximity of query terms
- Use of Proper nouns
Search Engine spiders give more importance to the sites in which keywords are used at following places in web page :
- Top and bottom of the page
- In Title
- In Meta Tags
- In Description
- In URL
- In headings
- Word with Boldface
- In the ALT tags for images
The entire search process are very complex and difficult to understand by any common people. As there various permutation and calculation for searching data from huge database, it is really difficult task for any search engine to provide an accurate search result. But as technology develops day by day, search engines also improves their techniques to provide most appropriate search results and keep hold on their internet users for searching information.
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