Types of search engine• Crawler based• Directories• Hybrid search engines• Meta search engines• Paid inclusion• Speciality search engines• Pay Per Click

Definition of Search Engine :

• Search engine is a software program that searches for sites based on the words that you designate as search terms.

• A place, on the Net, where one goes to find sites about specific information.

• 35% of the world population uses internet & 85% of all traffic on the internet is reffered to by search engines

CRAWLER BASED SEARCH ENGINES USE AUTOMATED SOFTWARE PROGRAMS TO SURVEY AND CATEGORIES WEB PAGES . THE PROGRAM USED BY THE SEARCH ENGINES TO ACCESS YOUR WEB PAGES ARE CALLED SPIDERS , CRAWLERS ,ROBOTS OR BOTS

A SPIDER WILL FIND A WED PAGE ,DOWNLOAD IT AND ANALYSES THE INFORMATION PRESENT ED ON THE WED PAGE.THIS IS A SEAMLESS PROCESS.THE WED PAGE THEN BE ADDED TO THE SEARCH ENGINE’S DATABASE.

CRAWLED BASES SEARCH ENGINES ARE CONSTANTLY SEARCHING THE INTERNET FOR NEW WED PAGE AND UPDATING THEIR DATABASE OF INFORMATION WITH THESENEW OR ALTERED PAGES.

EG:- GOOGLE

Advantages of using Search Engine

Easy to acquire different information from different topics

determine specifically information

Sorting and adding value to the information