How To Search Engine Works?

How To Search Engine Works?

Search Engine refers to a massive database of internet assets such as net pages, newsgroups, programs, photos etc. It facilitates to locate statistics on World Wide Web.

Block Diagram

How To Search Engine Works?

Web Crawler

 It is also called spider or Google bots. It is a software component that traverses the net to gather information.

Search Engine Working

Web crawler, database and the search interface are the major thing of a search engine that virtually makes seek engine to work. Search engines employ Boolean expression AND, OR, NOT to restrict and widen the consequences of a seek.

Following are the steps which might be executed by way of the search engine:

The seek engine seems for the keyword in the index for predefined database as opposed to going without delay to the web to search for the keyword.

It then makes use of software program to look for the records in the database.

This software program factor is referred to as web crawler. Once internet crawler unearths the pages, the quest engine then suggests the relevant internet pages as a result. These retrieved internet pages generally encompass title of page, size of textual content portion, first several sentences etc.

These seek criteria may vary from one search engine to the other. The retrieved records is ranked according to various factors inclusive of frequency of keywords, relevancy of facts, hyperlinks etc.