Web-centric Computing What CS4173 Is About

What is the WWW?  A distributed document delivery service implemented using the client-server model running on the Internet  Interoperability in a heterogeneous networked environment achieved by implementing shared protocols

What is the WWW?

 A distributed document delivery service implemented using application-level protocols on the Internet  A tool for collaborative writing and community building  A framework of protocols that support e-commerce  A network of co-operating computers interoperating using HTTP and related protocols to form a sub-net of the Internet  A large, cyclical, directed graph made up of webpages and links

What is the WWW? It is all of that and chips, too!

What do the applications have in common?  E-commerce  Collaborative writing  Collaborative community building  Distributed document delivery service

What do the applications have in common?  E-commerce  Collaborative writing  Collaborative community building  Distributed document delivery service  They all use the WWW as scaffolding  It is the framework that enables them

In Web-Centric Computing… We do computing on the WWW  Putting the WWW under a microscope Not programming of the WWW  Writing protocols, and applications  However it is important to understand how everything works at a deep level

Some things can only be learned by doing  So there will be programming  Making the client/server model jump through hoops  Alternation vs. interaction  Saving state with stateless protocols  Partial webpage updates (AJAX)  Remembering the human element  Audience analysis  Design for accessibility & stickability  Most programming will be in assignments  Some will be in tutorials

Exact Topics?  To be determined in consultation with students  Basics must be covered, but…  Ordering and Concentration can be adjusted to suit your needs  Caveat: You don't always get what you want, but sometimes you get what you need. *