Web Modeling

1
Web Modeling

• Elizabeth Bigelow
• CS 15-499C
• October 4, 2000

2
Today

• Scheduling
• Discussion of class association issues from last
  class
• Web Modeling

3
Scheduling

• Given the issues that are coming up, we need to
  switch to the other book
• Fridays lecture will be on Chapter 2 of Java
  Design by Coad and Mayfield
• Make up lecture will be Monday night
• Mentoring scheduled for Friday will be at groups
  discretion will try to reserve some time in
  class.

4
Next Round of Presentations

• 10/11/2000remaining groups
• Present projects (be sure to have handouts for
  the whole class)
• Present class and sequence diagrams, but in less
  detailadd deployment diagrams and web diagrams
  where appropriate

5
Making decisions on what to show in a diagram

• Abstraction vs. truth
• Where is the diagram in the evolution of the
  project?
• Dont worry too much about programming at
  firstworry about conveying information
• But dont abstract in such a way that the diagram
  is untrue

6
Visualizing a Class Association Diagram

• What do you see when you look at a diagram?

7
Possible misconceptions

• Utility of object modeling for databases systems
• Difference between conceptual and implementation
  diagrams

8
Deployment Diagrams

• Here we jump to implementation
• Generally represent components rather than
  objects
• What is a component?
• Unit of computation
• Usually more than one object
• More concerned with external interfaces than
  internal construction
• See Chapter 7 of Meilir Page-Jones book

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The Web

• Do objects make sense?
• What is the intended audience of our models?
• What would we want to accomplish with our
  diagrams?
• What would be the objects?

10
Extending UML

• Stereotypes