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What are the Differences of Component Diagrams and Deployment Diagrams?
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Simply put, a Component diagram shows you how different elements of your system have been grouped together (into assemblies / dlls etc) - and the link between these components. A Deployment diagram takes you one step further and describes on which hardware elements do these components reside.
A component diagram is similar to a class diagram in that it illustrates how items in a given system relate to each other, but component diagrams show more complex and varied connections that most class diagrams can.
Deployment diagram elements Association: A line that indicates a message or other type of communication between nodes. Component: A rectangle with two tabs that indicates a software element. Dependency: A dashed line that ends in an arrow, which indicates that one node or component is dependent on another.
A component diagram, also known as a UML component diagram, describes the organization and wiring of the physical components in a system. Component diagrams are often drawn to help model implementation details and double-check that every aspect of the system's required functions is covered by planned development.
Simply put, a Component diagram shows you how different elements of your system have been grouped together (into assemblies / dlls etc) - and the link between these components. A Deployment diagram takes you one step further and describes on which hardware elements do these components reside.
So for example, if "Utility.dll" is a component and say it is deployed on the Client Machine (hardware). Then, the Component Diagram of this system will show Utility and its link with other components in the system (say.. Customer / SQL Packages). Whereas, the Deployment Diagram will show the hardware configuration - DB Server / Web Server / Client Machine .. and Utility component will be placed into the Client Machine Node.
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