Component Diagram(构件图)

💨Component diagrams are used to model the physical aspect of a system.

What are these physical aspects?
Physical aspects are the elements such as executables,libraries,files,documents,etc.which reside in a node.

Components diagrams are used to visualize the organization and relationships among components in a system.

Purpose of Component Diagrams

It does not descirbe the functionality of the system but it describes the components used to make those functionalities.(components such as libraries,packages,files,etc)

Component diagrams can also be described as a static implementation view of a system. Static implementation represents the organization of the components at a particular moment(在特定时刻系统物理组件的组织图).
💊The purpose of the component diagram can be summarized as -
🥩 Visualize the components of a system.
🥩 Construct executables(可执行文件) by using forward and reverse engineering.
🥩 Describe the organization and relationships of the components.

How to Draw a Component Diagram?

Component diagrams are used to describe the physical artifact of a system.
This artifact includes files,executables,libraries,etc

Component diagrams are used during the implementation phase of an application.(visualize the implementation details. 可视化实现细节)

when the artifacts are ready, component diagrams are used to get an idea of the implementation. (了解如何实现）

This diagram is rather important as without it the application cannot be implemented efficiently.

😱A well-prepared component diagram is also important for other aspects such as application performance,maintenance,etc.

🎯Before drawing a component diagram, the following artifacts are to be identified clearly
🍡Files used in the system.
🍡Libraries and other artifacts relevant to the application
🍡Relationships among the artifacts

🔰After identifying the artifacts, the following points need to be kept in mind.
🥗Use a meaningful name to identify the component for which the diagram is to be drawn.
🥗Prepare a mental layout(心里有数) before producing the using tools.
🥗Use notes(关键点要注释） for clarifying important points.