This document provides a history of the development of the World Wide Web from its origins in 1980 through present day. It discusses Tim Berners-Lee's initial vision for a system to allow scientists to share information, the creation of the first web browser and server in 1990, and the launch and early growth of the Web in 1991-1995. It also outlines the standardization of HTML and other web standards by the W3C, and characterizes different generations of the Web from static Web 1.0 to user-generated Web 2.0 to a proposed personalized Web 3.0.
2. Agenda What is Web? History Function of Web Basic Web entities Web Standardization Web Generations References
3. What is Web Defination-It is a hypertext system that operates over the internet.It is a global information medium which users can read and write via computers connected to the Internet.
6. I have a dream for the Web [in which computers] become capable of analyzing all the data on the Web – the content, links, and transactions between people and computers. A ‘Semantic Web’, which should make this possible, has yet to emerge, but when it does, the day-to-day mechanisms of trade, bureaucracy and our daily lives will be handled by machines talking to machines. — Tim Berners-Lee, 1999
10. -There was a need that people were able to create cards independently of others and to link to other cards without updating the linked card. To be Continued.....
12. Berners-Lee considered its problems of information presentation: physicists from around the world needed to share data, and with no common machines and no common presentation software. He wrote a proposal in March 1989 for "a large hypertext database with typed links".
40. 1) Client makes webpage request using HTTP request msg. 2) It sends request from client to Web server Web server stores collection of web-pages created using markup language. Port 80 3) When requst arrives , server locates the requested page and send it to client using HTTP response msg. Function of Web Client (Browser) Web Server Client (Browser) Client (Browser) Internet
41. Basic Web Entities 1) HTML : Hypertext Markup Language It is used to create web page that is stored on web-server and provides information to client. 2) HTTP : Hypertext transfer protocol It is a protocol for transmitting web page over the internet. 3) URL : Uniform Resource Locator User types URL into browser(client) specifying the server hosting web page.
42. Web Standardiztion : Web standard is general term for formal standards and other technology specification that define and describe aspect of WWW World Wide Web Consortium – W3C is main international standard organization for www founded by Tim Berners-Lee in 1994. W3C standard : HTML, CSS, SOAP, XML, XSLT, Xquery, XHTML
43. HTML : Markup language for creating web page allows images and objects to be embedded and support intreactive forms Versions : 1) HTML 2.0 : Nov. 1995 by IETF HTML working group 2) HTML 3.2 : Jan 1997 W3C recommendation New features such as fonts tables, applet etc. 3) HTML 4.0 : Dec 1997 W3C recommendation Introduced CSS 4) HTML 4.1 : Dec 1999 W3C recommendation Just fixes bugs/error from HTML 4.0 5) XHTML 1.0: Jan 2000 W3C recommendation Reformulates HTML 4.01 into XML 6) HTML5: New generation for HTML Still in progress
44. Highlight of HTML5 Co-operation between W3C and WHATWG Modern browser support HTML5 New Elements: 1) Media element: <audio> :- sounds, audio streams (mp3, wav) <video> :- movie, video stream (mpeg4, webM) <embed>:- For embedded content such as plug in 2) Canvas Element: To make drawing on web page. Uses JavaScript to make drowing on Web page. 3) Input Element: tel,search,url,email,date