Question

What UML diagram types may be used to represent the essential features of a system?

1) Class diagram
2) Use case diagram
3) Sequence diagram
4) Activity diagram

Answer 1

Four UML diagram types can be used to represent the essential features of a system: class diagram, use case diagram, sequence diagram, and activity diagram.

Step-by-step explanation:

The UML diagram types that may be used to represent the essential features of a system are:

1. Class diagram: This diagram represents the static structure and relationships between the classes in a system. It shows the attributes, methods, and associations of each class.
2. Use case diagram: This diagram represents the interactions between actors and the system. It shows the different use cases or functionalities that the system provides.
3. Sequence diagram: This diagram represents the interactions between objects in a system over time. It shows the sequence of messages exchanged between objects.
4. Activity diagram: This diagram represents the flow of activities or processes in a system. It shows the steps, decision points, and branching paths.