18 Questions
What type of diagram provides a black-box perspective of a system's components and their interactions?
Component Diagram Example Hydroponics Gardening System (black-box perspective)
Which term describes the consistent connections between components based on their interfaces?
Component Interfaces Specification
In a component diagram, what relationship can be used to show that one class implements the services of another class?
Realization Dependencies
How can a component diagram represent that a component contains other components?
Component Diagram - Example
Which section of a component diagram may provide more detailed information about a component's interfaces?
Component Interfaces Specification
What describes the connections between classes in a component diagram that reflect the actual implementation relationships?
Realization Dependencies
What does a deployment diagram show?
Set of processing nodes and their relationships
What are the three essential elements of a deployment diagram?
Artifacts, nodes, and connections
In a deployment diagram, what does an artifact typically represent?
Software code (executable)
What kind of relationships can artifacts have with each other in a deployment diagram?
Dependency or composition
What does it mean if an artifact has a dependency relationship with a component in a deployment diagram?
The artifact physically implements the component
What is a node in a deployment diagram?
Computational resource for deploying artifacts
What does a component in a component diagram represent?
A collection of collaborating classes
Which view of a component focuses on its publicly visible properties and operations?
Black-box view
How are dependencies among different components represented in a component diagram?
As dotted lines with arrows from the supplier component to the client component
What is the purpose of a component diagram?
To show the network of dependencies among different components
What is the component icon in a component diagram based on?
A rectangle with a class icon inside
How does the black-box view of a component differ from the white-box view?
The black-box view shows publicly visible properties and operations, while the white-box view shows internal details.
Study Notes
Components
- A component is a collection of collaborating classes that provide interfaces and may have attributes and operations.
- A component can participate in associations and generalizations.
- Components have two views:
- External or "Black box" view: considers publicly visible properties and operations.
- Internal or "White box" view: considers private properties and realizing classifiers, showing how the component's behavior is realized internally.
Component Notation
- Component icon is a class icon with the keyword «component».
- Optionally, a component icon can be included in the top, right-hand corner.
- Black-box view shows only interfaces provided and required, either using "ball-and-socket" notation or listed in a compartment of the component rectangle.
Component Diagram
- Used to model the top-level view of the system design in terms of components and dependencies among components.
- Shows the network of dependencies among different components.
- Dependencies are shown as dashed lines with arrows from the client component to the supplier component.
Component Diagram Example
- Student Administration system: components include StudentSchedule, StudentPersistence, and DataAccess.
- Hydroponics Gardening System: components are shown in both black-box and white-box perspectives.
Component Interfaces
- A component's interfaces can be specified in more detail.
- Interfaces are provided and required services.
Component Diagram Realization
- Realization dependencies show how components are related to each other.
- Alternative representation: containment relationships.
Component Internal Structure
- A component can contain other components.
Deployment Diagram
- Shows a set of processing nodes and their relationships.
- Represents the static deployment view of an architecture.
- Essential elements: artifacts, nodes, and their connections.
Deployment Diagram Notation
- Artifact notation: represents software code (executable), file, or other item related to software code.
- Artifact relationships: dependencies, compositions, etc.
- Nodes: computational resources, containing memory and processing, on which artifacts are deployed for execution.
- Node types: devices (e.g., computer, modem, sensor) and execution environments (e.g., J2EE Server, IIS + PHP Server).
Test your knowledge on the concept of components in software engineering, including their attributes, operations, associations, and interfaces. Explore the external view of components and their collaboration with other classes.
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