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This article is about what UML static model diagrams are about. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

UML static model diagram

UML static model diagram package:

Object graph

Class diagram

Package diagram

Object graph (ObjectDiagram)

A graph that represents a group of objects and their relationships at some point in time. An object diagram can be seen as an example of a class diagram at some point in the system.

On the graph, the object graph is composed of nodes and the connections that connect these nodes. The nodes can be objects or classes, and the connections represent the relationship between objects.

The modeling process of object graph:

1. To determine the classes of the objects involved in the interaction, you can refer to the corresponding class diagram and interaction diagram

2. Determine the relationships between classes, such as dependency, generalization, association, and implementation

3. Use the object graph to model the objects according to the state of each object at a particular time of the interaction.

4. When modeling, the system analyst should draw the connection relationship between the key objects of the key state of the object according to the goal of the modeling.

Class diagram

The class diagram in the UML static model diagram defines not only the classes in the system and the relationships between them, but also the internal structure of the class (the properties and operations of the class), which is valid throughout the life cycle.

The logically related classes are packaged into bread, which can well reflect the hierarchical structure of the system so that people can understand the hierarchical relationship of the system at a glance.

An object diagram is an instance of a class diagram.

The differences between class diagrams and object diagrams:

Let's take a look at the differences between class diagrams and object diagrams in the UML static model diagram. The object diagram shows multiple object instances of the class diagram instead of the actual class. At the same time, the object graph has a life cycle, so the object graph can only exist at a certain time in the system.

The package is composed of packages or classes, which represents the relationship between packages. The package diagram is used to describe the hierarchical structure of the system.

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