Maryam FarooqiRoll no 27

SEARCH ENGINESAn introduction to a new

world

Search Engine

“A computer program that searches documents, specially on the WWW, for a specified word or words and provides a list of documents in which they are found.”

e.g: Google Yahoo! Bing Ask WebCrawler Wow

Web browser and search engine

A SOFTWARE RUN ON THE COMPUTER

PROVIDES ACCESS TO A SEARCH ENGINE

E.G CHROME SAFARI OPERA FIREFOX

A SOFTWARE THAT RUNS ON THE SERVER SOMEWHERE ELSE

STORES INFO AND INDEXES FOR SEARCHERS TO FIND

E.G GOOGLE YAHOO! BING

Types of Search Engines

Search by Keywords (e.g. AltaVista, Excite, Google, and Northern Light) Search by categories (e.g. Yahoo!) Specialize in other languages (e.g. Chinese Yahoo! and Yahoo! Japan) Interview simulation (e.g. Ask Jeeves!)

3 Major Components:

Spider/WebCrawler Index (gathers the organic search

results) Search interface

PROTOCOLS: These are the rules and regulations through

which the electronic items are to connect and to exchange information .

e.g: HTTP(Hypertext transfer protocol)

FTP(File transfer protocol) HTML(Hypertext markup language) SMT(Simple mail transfer protocol)

FACTS AT A GLANCE

The first searching tool: “Archive” was created in 1990, was able to create a searchable

database.

Gopher came in 1991,it led to new search programs , Veronica and Jughead.

Web’s second search engine was “ALIWEB”, appeared in 1993.

Fletcher : It was the first WWW resource discovery tool. It combined the 3 essential features of web search engines :

1. Crawling 2. Indexing 3. Searching

Conti….

WebCrawler: One of the first “All Text” crawler based search engine , came in 1994.

Soon after many search engines came: Excite Infoseek Northern Light Inkotomi Altavista Yahoo!

Emergence of GOOGLEGoogle was started in 1996/98.Around 2000 it rose to prominence by achieving better search results for many searches with an innovation called Page Rank.

7 important achievements of Google:

1. Google adSense

2. Youtube

3. Google Maps

4. Gmail

5. Android

6. iPhone Search

7. Chrome

GOOGLE’S COOPERATION MISSION

“Google’s mission is to organize the world’s information and make it

universally accessible and useful.”

Top Rating Search Engines:

1. Google2. Bing3. Yahoo!4. Ask5. AOL.

Conti…

6. My webSearch7. Web Crawler8. WOW9. Info Seek10. Blekko

Importance of search engines:

Using search engines for research:1. Medical2. Engineering3. History4. Computer skills (android & other computer courses)5. Software Industry6. Literature7. For Term Paper

Conti…

Using search engines for Entertainment:

1. Videos2. Movies3. Games4. Health and Fitness sites5. Social Networking sites

Conti…

Using search engines to shop:

Cyber shopping(Amazon ,eBay and Shopping.com)

Cyber banking Trading companies Softwares

Thank You!