Classes
What a class box represents and how to name and draw one.
Udacity / Georgia TechOpen on YouTube
SE322
DIAGRAM VIDEO EXPLANATION
UML diagrams, explained on video
19 short walkthroughs, mostly from the Georgia Tech Software Development Process course, with two full guides from Lucid Software. Pair them with the Chapter 9 documentation views.
Class Diagrams10
Build a class diagram piece by piece, then tie it together.
Attributes
Recording the data a class holds, with types and visibility.
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Operations
Adding the behaviour a class offers, with parameters and return types.
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Relationships
Dependency, association, aggregation, composition and generalization.
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Dependency Relationship
When one class uses another only briefly, such as a parameter, and how the dashed arrow shows it.
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Association & Aggregation
Linking classes with associations and multiplicities, and marking whole–part aggregation.
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Generalization Relationship
Modelling is-a inheritance between a superclass and its subclasses.
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Relationships Quiz
Pick the right relationship for each scenario before watching the solution.
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Relationships Quiz Solution
Walkthrough of the quiz answers and why each relationship fits.
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Creation Tips
Practical advice for turning requirements into a clean class diagram.
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Structural Diagrams02
How a system is split up and where it runs.
Component Diagram
How a system splits into components, the interfaces they provide and require, and how they wire together.
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Deployment Diagram
How software artifacts map onto physical nodes: devices, execution environments and the links between them.
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Behavioral Diagrams04
What the system does and how objects talk over time.
Use Case Diagram
Actors, use cases and the include / extend relationships that describe what a system does for its users.
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Use Case Diagrams: Full Guide
A complete walkthrough of use case notation, from system boundary to generalization, with a worked example.
Lucid SoftwareOpen on YouTube
Sequence Diagram
Lifelines, messages and activations: modelling an interaction as it unfolds in time.
Udacity / Georgia TechOpen on YouTube
How to Make a Sequence Diagram
Step-by-step construction of a sequence diagram, including fragments for loops and alternatives.
Lucid SoftwareOpen on YouTube
Process Context03
Where these diagrams fit in the wider development process.
Requirements Engineering
Eliciting, analysing and specifying requirements before design begins.
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Verification & Validation
Building the product right versus building the right product.
Udacity / Georgia TechOpen on YouTube
Maintenance
Corrective, adaptive, perfective and preventive maintenance after release.
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