Dr. Mark Humphrys

School of Computing. Dublin City University.

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CA216      CA249      CA318

CA400      CA651      CA668

CA668 - eCommerce Infrastructure

Quickest way to find this web page:
Google ca668 dcu
Think about it: All other ways (starting at the CA site, Googling my name, etc.) will take much longer to get here.
Just Google module code and DCU and it is the first hit.



How to contact me

See How to contact me.

About the notes

Week (lecture)


Week (lab)


Week 1

Introduction to Networks
  1. Internet Demo page
  2. Internet Demo page (more)


  1. Networks Reference [REFERENCE]

  2. Internet Reference [REFERENCE]


Week 2

The Internet
  1. Hosts and IP addresses

  2. DNS

  3. Remote and Network Computing [REFERENCE]

Week 3

  1. How to find your IP address

  2. Network tools

Week 3

The Web
  1. Aspects of a modern web site:
    1. HTML
    2. XML
    3. XHTML
    4. HTML5
    5. CSS
    6. SSI
    7. CGI
    8. PHP
    9. Javascript
    10. Ajax
    11. JSON

  2. How to set up and maintain Web pages

Week 4

  1. Lab - Web

Week 4

The Web
  1. The Web

Dynamic pages - server-side

  1. Dynamic pages - server-side

  2. CGI scripts (server-side)
    1. Chaos Theory (Demo of a C++ CGI script)
    2. Perl

My CGI search engine (This is written in Shell. Shell is not part of this module. But you may find these pages interesting anyway.)

  1. My CGI search engine
  2. How to write a CGI search engine in Shell
  3. Lab to write search engine in Shell

Week 5

  1. CSS and SSI

Week 5

Dynamic pages - server-side
  1. My "404 Not Found" Handler (.htaccess plus server-side program)

  2. PHP
    1. PHP demo page
    2. PHP mini test

Week 6

  1. Lab - PHP

  2. How to debug a program

Launch PHP practical.

Week 6

Dynamic pages - client-side
  1. Dynamic pages - client-side

  2. JavaScript
    1. Debugging

  3. Javascript page change demo
  4. Minimal size demo of changing page

  5. Javascript menu demo

Week 7

  1. Lab - Javascript

  2. How to debug a program

Week 7

  1. Javascript environment variables demo
  2. Javascript syntax highlighting

  3. JavaScript (More)

Week 8

  1. Javascript - doing calculations on client side

Week 8

  1. JavaScript Ajax - JavaScript's 2nd life
    1. Javascript Ajax demo
    2. Javascript Ajax demo - calling a server-side program
    3. Minimal size demo of calling a server-side program
    4. Javascript Ajax - Parsing XML on the client side

  2. JavaScript Ajax (More)


  1. jQuery
    1. Anonymous functions

  2. jQuery - test page

  3. Minimal size demo of calling server-side program with jQuery
  4. Minimal size demo of fetching server-side resource with jQuery

Week 9

  1. Lab - Ajax

Week 9

Comparison of different ways of putting a program online
  1. Client v. Server - Putting a program online


  1. JSON

Week 10

  1. Lab - JSONP using Flickr feeds

Launch Javascript practical.

Week 10

Web architecture
  1. The Web - Overview

  2. REST APIs

Web services and APIs

  1. Web services and Service-oriented architecture

  2. Web APIs

  3. RPC APIs

  4. Asynchronous APIs

Cloud computing

  1. Cloud computing

Week 11

  1. Lab - SOAP using Flickr API

Week 11

Machine readable v. human readable data
  1. Binary v. Text


  1. XML and HTML (Machine readable and human readable content)

  2. RSS


Week 12



  1. Email


Extra notes - Not on course this year

  1. Network classes

  2. Transport Layer

JavaScript graphics (3D graphics rendering on client-side, JavaScript's 3rd life)

  1. JavaScript graphics notes


Do as individuals.

Do in your own time.

Deadline week 12, last lecture.

MECB do one practical, 35 percent of module. PHP. Further details TBA.

Other students do two practicals, 15 and 20 percent of module. PHP and JavaScript. Further details TBA.



PHP and Javascript

Library categories


PHP and Javascript


Sometimes I link to Wikipedia. I need to write something in defence of this.

On the one hand, Wikipedia is deeply flawed, so you should use all links to Wikipedia with extreme caution. Many people refuse to link to it.

On the other hand, it is often clearly the best thing to link to on a topic. I say: Link to it, but use with caution and scepticism.

Mark calculator

Exam (65): Practical (35):

Total mark:      

Feeds      w2mind.org

On Internet since 1987.