The useful parts of UML
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
pick the few UML diagrams that earn their place.
Planned topics
- Sequence diagrams: who calls whom, in what order, including failures.
- State diagrams: lifecycle of an object, such as an order.
- Activity diagrams: flow with decisions; use sparingly.
- Skip class-diagram detail at architect level; leave it to teams.
Draft outline details
Demonstration
sequence for payment authorization: web app, order service, payment provider, with timeout and retry. State diagram of an order: placed, paid, picked, shipped, delivered, returned.
Check your understanding
Which diagram best shows an order's lifecycle?
Show answer
A state diagram.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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