Web Tech
- 1. INTRODUCTION Web Technologies are the Techniques using which we can access various resources on the Web. Web technologies related to the interface between web servers and their clients. This information includes markup languages, programming interfaces and languages, and standards for document identification and display.
- 2. It facilitates communication, secure information sharing and collaboration on the World Wide Web . The basic Web technologies that are used to implement the Web portion of Web Services : Core Web Technologies Tunneling Firewalls
- 3. Some Historical Details Start of standard groups : TCP, IP, TCP/IP, TELNET,FTP SMTP Archie Gopher Core Web Technologies : Core Web Technologies enable linking and sharing documents
- 4. CHARACTERISTICS Web Server Eg – HTTPd (HTTP Daemon) Web Browser Eg – NCSA Mosaic Netscape Communication Suite : Netscape Messenger Netscape Composer Netscape Conference Firewalls
- 5. WEBSITES AND MARK UP LANGUAGES Websites : World Wide Web is a Grand global collection of Websites and Internet interconnects all the Sites. Hypertext Document. – HTML – HyperText Markup Language – CSS – Cascading Style Sheets – JavaScript XML is a software and hardware independent tool for carrying
- 6. How the Web Works Your computer must have communications hardware with installed drivers (software) – Modem card, ex: 56k Modem – Network or NIC card, ex: Linksys * – Wireless Network card
- 7. How the Web Works Your computer must have Web browser software – AOL Online Software – Microsoft Internet Explorer – Netscape Navigator – Other web services require mail programs (Outlook) or File Transfer programs (WS_FTP)
- 8. How the Web Works Your computer must be logged into the Web – Dialup has dialed, connected & user has logged in OR – DSL/Satellite/Cable modem is on and connected
- 9. WHAT LED TO WEB TECHNOLOGIES SUCCESS Simple Architecture – HTTP,URL,HTML Networked – value grows with data, Services, users . Simple for Users – Text , Graphics and Links Powerful – for people and Machines
- 10. EMERGING TECHNOLOGIES The main revolutionary Web Technologies : Web 2.0 Web 3.0 Today's Latest web technologies : AJAX Ruby Ruby on Rails
- 11. ADVANTAGES Web Technology have led to : Web development Evolution of web-based communities : social-networking sites, video-sharing sites, wikis, blogs. Business Revolution
- 12. CHALLENGES ENCOUNTERED USING WEB TECHNOLOGIES Limited Interactivity Lack of Skills Security Risks Browser Compatibility Lack of Web Development Tools Standardization
- 13. SUMMARY Most Web pages remote or local are a combination of those Web technologies : – Raw content, placed inside… – HTML tags, formatted with… – CSS rules, interactivity produced by… – JavaScript scripts Newer technologies like DHTML, XHTML, and XML are based on these – A little knowledge now can prepare