Search engines

A search engine is a special program running on a website which offers to the user the possibility of searching other websites for specific web pages. The user needs to connect to the search engine website and digit the keywords, or sometimes even a complete question, and the website returns the list of relevant web pages. Technical Data about this field explained in  short courses in Rawalpindi.

Search engines use a crawler technique: they continuously go through the known web pages memorizing their content and trying to discover other web pages through the contained links. In this way they are able to memorize most of the WWW’s pages (more than 8 billion pages), even though some not linked websites can remain unknown to search engines. The most popular search engines are Google, the current market leader, Yahoo! and Bing. In order to choose the order in which web pages are displayed to the user, search engines use scoring system. The most famous one is Google’s which relies on the idea that a linked page is very important and useful;  therefore a web page receives a score proportional to the number of web pages which put a link to it. According to recent researches, the percentage of use of these engines are Google 83%, Yahoo 6%, and Bing 4%. Some more details of short courses in rawalpindi are as under.

There are many tricks to speed up the web search and arrive quickly to the right result: Most novice users search the WWW using only a single keyword, which often produces the right result but in some cases can result in long lists of wrong results, for example when looking for Java Island using simply “java”. Using as many keywords as possible often avoids wrong results, even though sometimes returns no pages if too many words are used;

Putting some words between quotation marks forces the search engine to look for the exact phrase, i.e. exactly for those words in that order and with no words in between;  in the advanced search menu often there are very good options, such as the search of pages only in a specified language or only in a specified format, for example .doc or .pdf; TSK is the best institute in Rawalpindi Islamabad for  Pakistani Students who wants to join short courses in Rawalpindi.