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This article shares information about what UML component diagrams and configuration diagrams are. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

UML component diagrams and configuration diagrams

Component diagrams and Deployment diagrams show some of the characteristics of the system implementation, including the static structure of the source code and the implementation structure at runtime. The component diagram shows the structure of the code itself, and the configuration diagram shows the structure of the system at runtime.

(1)UML component diagrams show dependencies between software components. Generally speaking, software component is an actual file, which can be source code file, binary code file and executable file. Can be used to show dependencies between artifacts at compile, link, or execution time.

(2)Configuration Diagram A configuration diagram describes the physical topology of the system hardware and the software executing on it. Configuration diagram can show topology structure and communication path of computing nodes, software components running on nodes, logical units (objects, classes) contained in software components, etc. Configuration diagrams are often used to help understand distributed systems.

(3)Node and Connection Node represents 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 Backend Server" are two nodes. The node is represented as a cube, with the node name in the upper left corner. The connection between nodes represents the communication path between systems, which is called Connection in UML. The communication type is placed next to the connection between "", indicating the communication protocol or network type used.

(4)UML component diagrams represent executable physical code modules, such as an executable program. Logically it corresponds to a package or class in a class diagram. Therefore, the configuration diagram shows how packages or classes are distributed among nodes at runtime. As shown in Figure 1, the "insurance background server" node contains three components: "insurance system,""insurance object database" and "insurance system configuration." In an object-oriented approach, not all attributes and operations of elements such as classes and artifacts are visible. They provide visible operations and attributes to the outside world, called interfaces for classes and artifacts. An interface can be represented as a line with a small circle at one end. In Figure 1, the Insurance System widget provides a Configuration interface. The configuration diagram also shows the dependencies between the 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 artifacts can be thought of as physical code modules corresponding to packages or classes, artifacts should contain objects that run. Objects in a configuration diagram are represented in the same way as objects in an object diagram. In Figure 1, the Insurance System Configuration component contains two objects: Configure Insurance Policy and Configure User.

The static modeling mechanism of UML is the basis of modeling with UML. In our view, mastery of basic concepts, distinction between different levels of abstraction and flexibility in practice are the three most noteworthy basic principles.

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