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 InternetInteroperability in a heterogeneous networked environment achieved by implementing shared protocols

What is the WWW?

A distributed document delivery A distributed document delivery service implemented using service implemented using application-level protocols on application-level protocols on the Internetthe Internet

A network of co-operating computers interoperating using HTTP and related protocols to form a sub-net of the InternetLike network news (Usenet) or UUCP or …

What is the WWW?

A distributed document delivery A distributed document delivery service implemented using service implemented using application-level protocols on the application-level protocols on the InternetInternet

A network of co-operating computers A network of co-operating computers interoperating using HTTP and related interoperating using HTTP and related protocols to form a sub-net of the protocols to form a sub-net of the InternetInternet

A tool for collaborative writing and community buildingBlogs, wikis, podcastsInteractive games and chats

What is the WWW?

A distributed document delivery service A distributed document delivery service implemented using application-level implemented using application-level protocols on the Internetprotocols on the Internet

A network of co-operating computers A network of co-operating computers interoperating using HTTP and related interoperating using HTTP and related protocols to form a sub-net of the protocols to form a sub-net of the InternetInternet

A tool for collaborative writing and A tool for collaborative writing and community buildingcommunity building

A framework that supports e-commerceOn-line shopping and Business-to-BusinessSecure credit-card transactionsShopping carts

What is the WWW?A distributed document delivery service A distributed document delivery service implemented using application-level implemented using application-level protocols on the Internetprotocols on the Internet

A network of co-operating computers A network of co-operating computers interoperating using HTTP and related interoperating using HTTP and related protocols to form a sub-net of the protocols to form a sub-net of the InternetInternet

A tool for collaborative writing and A tool for collaborative writing and community buildingcommunity building

A framework of protocols that support e-A framework of protocols that support e-commercecommerce

A large graph made up of webpages and links Webpages are nodes; Links are edgesCyclical and directed

What is the WWW?

It is all of thatand chips, too!

What do the applications have in

common?E-commerceCollaborative writingCollaborative community building

Distributed document delivery service

What do the applications have in

common?E-commerceCollaborative writingCollaborative community buildingDistributed document delivery service

They all use the WWW as scaffoldingIt is the framework that enables them

In Web-Centric Computing…

We do computing on the WWWPutting the WWW under a microscope

Not programming of the WWWWriting 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 programmingMaking 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.*