Many diagrams in object-oriented design and programming relate to the application and system as a whole, but sometimes you want to drill down to how specific objects in the system interact with one another. This is where the Sequence diagram comes in. The idea is to map out the basics of a particular scenario (rather than cover every possible outcome) and use the diagram to make sure you have the right setup of classes. Watch this online video to learn more about creating sequence diagrams.
We've seen a few diagrams, conceptual models, use case diagrams, class diagrams.…These are what are considered Structural or Static diagrams.…They are great at representing things like the overview of the classes in your…application and seeing Inheritance and Composition or the actors in a system.…But they are not so great at representing, say, the lifetime of an object or…actually how objects interact with one another.…So there are also Behavioral or Dynamic diagrams in UML.…And these can describe how different objects change and how they…communicate with each other.…
And the most common one is the Sequence diagram.…Now a Sequence diagram does not describe the entire system just one particular…part of it, one particular interaction between a few objects in one scenario.…We start a Sequence diagram with some boxes at the top that represent the…objects, the participants in this sequence, could have two, could have three,…could have several more.…Because we are trying to describe an interaction between what will actually be…
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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