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This article mainly introduces the UML component diagram and configuration diagram example analysis, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

UML component diagram and configuration diagram

UML component diagram (Componentdiagram) and configuration diagram (Deploymentdiagram) show some characteristics of the system implementation, including the static structure of the source code and the implementation structure at run time. The UML component diagram shows the structure of the code itself, and the configuration diagram shows the structure of the system at run time.

(1) UML component diagram shows the dependency relationship between software components. Generally speaking, a software component is an actual file, which can be source code files, binary code files, executable files, and so on. Can be used to show the dependencies between compiling, linking, or executing artifacts.

(2) the configuration diagram describes the physical topology of the system hardware and the software executed on this structure. The configuration diagram can show the topology and communication path of the computing node, the software components running on the node, the logical units (objects, classes) contained in the software components, and so on. Configuration diagrams are often used to help understand distributed systems.

(3) Node and connection node (Node) represent a physical device and the software system running on it, such as a Unix host, a PC terminal, a printer, a sensor, etc. As shown in figure 1, "client PC" and "insurance background server" are two nodes. The node is represented as a cube, and the node name is placed in the upper left corner. The connection between nodes represents the communication path of interaction between systems, which is called Connection in UML. The communication type is placed between the "" and "" next to the connection, indicating the communication protocol or network type used.

(4) components and interfaces in the configuration diagram, components represent executable physical code modules, such as an executable program. Logically it can correspond to a package or class in a class diagram. Therefore, the configuration diagram shows the distribution of each package or class in the node at run time. For example, in figure 1, the "insurance background server" node contains three components: "insurance system", "insurance object database" and "insurance system configuration". In the object-oriented approach, not all attributes and operations of elements such as classes and artifacts are visible. They provide visible operations and properties, called interfaces for classes and artifacts. The interface can be expressed as a straight line with a small circle at one end. In figure 1, the Insurance system component provides a configuration interface. The configuration diagram also shows the dependencies between components, and the Insurance system configuration component depends on this configuration interface.

(5) Object many objects can be run in an object-oriented software system. Because the component in the UML component diagram can be regarded as the physical code module corresponding to the package or class, the component should contain some running objects. The objects in the configuration diagram are represented the same as the objects in the object diagram. In figure 1, the Insurance system configuration widget contains two objects: configure Insurance Policy and configure users.

The static modeling mechanism of the standard modeling language UML is the basis of modeling with UML. We believe that mastering basic concepts, distinguishing different levels of abstraction and applying them flexibly in practice are the three most noteworthy basic principles.

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