Writing use cases when programming helps document several scenarios, but it does not always give context and interactions between different actions. Diagramming use cases using UML allows you to see how a set of use cases and several actors will interact with your application. It also gives context to your development. Learn how to diagram use cases by watching this online video.
A use case diagram is another diagram that comes from UML.…The name can be a little misleading.…It sounds like a diagram of a use case, and it isn't.…It's almost always a diagram of several use cases and multiple actors at the same time.…The reason it exists is so we can get an overview of these and see how they…interact all in context.…So it's not a replacement or substitution for a written use case. It's not the same thing.…We still need the written use cases, we have this so we can see a different perspective.…
So, imagine that we've been asked to write a simple knowledge base for an organization.…We've talked to the customer, written a few casual use cases, brainstormed some…actors of this new system that we plan to build.…The use case titles are in no particular order, Search Articles, View an Article,…Manage Users, Create an Article, and View Analytics.…I am not trying to be exhaustive here, just list a few use case goals that make sense.…Let's say our actors are all role-based.…We've got a Visitor, a Contributor, and an Administrator.…
Let Simon Allardice introduce you to the terms—words like abstraction, inheritance, polymorphism, subclass—and guide you through defining your requirements and identifying use cases for your program. The course also covers creating conceptual models of your program with design patterns, class and sequence diagrams, and unified modeling language (UML) tools, and then shows how to convert the diagrams into code.
- Why use object-oriented design (OOD)?
- Pinpointing use cases, actors, and scenarios
- Identifying class responsibilities and relationships
- Creating class diagrams
- Using abstract classes
- Working with inheritance
- Creating advanced UML diagrams
- Understanding object-oriented design principles
Skill Level Intermediate
1. Core Concepts
2. Object-Oriented Analysis and Design
Defining requirements6m 9s
3. Utilizing Use Cases
4. Domain Modeling (Modeling the App)
5. Creating Classes
6. Inheritance and Composition
7. Advanced Concepts
8. Object-Oriented Design Patterns
9. Object-Oriented Design Principles
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