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Web engineering an introduction2 1

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Web Engineering AN INTRODUCTION Motivation  The World Wide Web is omnipresent!  Why?  global and permanent availability  comfortable and uniform access  anyone can produce and publish contents Examples  Search Engine  Information  Announcement  Computation  Mixed Basic paradigms  Hypertext + Internet  Hypertext: textual documents together with the ability to interconnect documents by links between them as part of the document contents  HTML: HyperText Markup Language  HTTP: HyperText Transfer Protocol Conceptual Architecture History of the Web  1969: ARPA (Advanced Research Projects Agency)  First small network: Stanford Research Institute, UCLA, UC Santa, Barbara, Univ. of Utah  TCP (Transmission Control Protocol)  IP (Internet Protocol)  1972: Telnet protocol  1973: SMTP (Simple Mail Transfer Protocol)  1973: FTP (File Transfer Protocol)  1989: T. Berners-Lee et al.: Word Wide Web (WWW)  1994: W3C (World Wide Web Consortium)  1996: HTTP (HyperText Transfer Protocol) Protocol Stack World Wide Web Consortium (W3C)  international consortium where member organizations, a full-time staff, and the public work together to develop Web standards  W3C's mission: to lead the World Wide Web to its full potential by developing protocols and guidelines that ensure long-term growth for the Web. Web Application A Web Application is a ...
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