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Search Engine Optimization [SEO] Tutorials
What is SEO?
Optimizing your website so as to obtain a high search engine results position is called as SEO Techniques. There is analytic report says that 65% of all websites visited start with a search from a search engine.
What is the function of search engine?
The function of search engine is to provide a list websites when a user performs a search, it has to list the website according to the quality of the content present in the website.
What are all the process that are done by search engine while we search?
Whenever we perform a search according to your needs, search engine will undergoes following steps. They are Spidering, Crawling, Indexing
Spidering is done by a browser-like program(Spider) that downloads web pages.
Crawlering is done by a program(Crawler) that automatically follows all of the links on each web page.
Indexing is done by a program(Indexer) that analyzes web pages downloaded by the spider and the crawler.
| Database |
storage for downloaded and processed pages. |
| Results engine |
extracts search results from the database. |
| Web server |
a server that is responsible for interaction between the user and other search engine components. |
How Spider differs from a normal web browser?
The difference is that a normal browser displays the information presented on each page (text, graphics, etc.). While a spider does not have any visual components and works directly with the underlying HTML code of the page.
What is the function of a Crawler?
Crawler finds all links on each page, to determine where the spider should go either by evaluating the links or according to a predefined list of addresses. The crawler follows these links and tries to find documents which are not already known to the search engine.
What is the function of Indexer?
Indexer parses each page and analyzes the various elements, such as text, headers, structural or stylistic features, special HTML tags, etc.
What is the purpose of database?
Database is the storage area for the data that the search engine downloads and analyzes. It is called the index of the search engine. |
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