About UML component diagrams

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Component diagrams are implementation-level diagrams that show the structure of the code itself. A component diagram consists of components, such as source code files, binary code files, executable files, or dynamic-link libraries (DLLs), connected by dependencies.

Use a component diagram to partition a system into cohesive components. Typically, each component in a component diagram is documented in more detail in a use case or class diagram.

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