How does a search engine (like google) work?

[BrainBUG]

Frenz, hope these questions are well worth answering:1. What is the working principle of search engines?2. Is it possible that I get my site in the google search results by typing some specific topics?3. If yes, how?I've heard people talking about meta tags.Would u show me an example?


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[jaghanivasan]

1.) Google uses a special algorithm to generate search results .These algorithms will not be revealed by the company they are kept as a secret .Google uses automated programs called spiders or crawlers

2.) Google uses a trademarked algorithm called PageRank, which assigns each Web page a relevant score.
yes it is possible to find your site in google search .it depends on some factors .

3.) Meta tags allows the owner of a page to specify key words and concepts under which the page will be indexed. This can be helpful for your web page to score more points

[derek88]

You also must know about:

1. Googlebot, Google’s Web Crawler

Googlebot is Google’s web crawling robot, which finds and retrieves pages on the web and hands them off to the Google indexer. It’s easy to imagine Googlebot as a little spider scurrying across the strands of cyberspace, but in reality Googlebot doesn’t traverse the web at all. It functions much like your web browser, by sending a request to a web server for a web page, downloading the entire page, then handing it off to Google’s indexer.

2. Google’s Indexer

Googlebot gives the indexer the full text of the pages it finds. These pages are stored in Google’s index database. This index is sorted alphabetically by search term, with each index entry storing a list of documents in which the term appears and the location within the text where it occurs. This data structure allows rapid access to documents that contain user query terms.

To improve search performance, Google ignores (doesn’t index) common words called stop words (such as the, is, on, or, of, how, why, as well as certain single digits and single letters). Stop words are so common that they do little to narrow a search, and therefore they can safely be discarded. The indexer also ignores some punctuation and multiple spaces, as well as converting all letters to lowercase, to improve Google’s performance.


3. Google’s Query Processor

The query processor has several parts, including the user interface (search box), the “engine” that evaluates queries and matches them to relevant documents, and the results formatter.

PageRank is Google’s system for ranking web pages. A page with a higher PageRank is deemed more important and is more likely to be listed above a page with a lower PageRank.

[sweetpink]

And very important, the technology they use: The heart of Google's search technology is PigeonRank™, a system for ranking web pages developed by Google founders Larry Page and Sergey Brin at Stanford University.

It allows to get speed and accuracy of a Google search.