inheritance relationship. Child cases are similar to parent cases, but show more special behaviors. Child Cases inherit all structures, behaviors, and relationships of the parent case. A child use case can use a behavior of the parent use case or reload it. The parent case is usually abstract.
[Arrow pointing]: pointing to the parent use case
C. Include)
The include relation is used to break down the Functions Represented by a complex use case into smaller steps.
[Arrow pointing]: points to
. Generalization (inheritance)Is the commonly understood inheritance relationship, where the child use case is similar to the parent use case, but behaves more specifically, and the child use case inherits all the structures, behaviors, and relationships of the parent use case. A child use case can use a section of the parent use case, or it can be overloaded. The parent use case is usually abstract.Arrow pointing to: pointing to the parent use caseC. Include (include) The include relationship
The various elements of UML are not mentioned here, I just want to talk about the relationship between classes in the class diagram, can understand the class diagram of the lines between the classes, arrows represent what meaning, it is enough to deal with daily work and communication, at the same time, we should be able to express the meaning of the class
Because the actual results of the previous solution were not satisfactory and did not match the initial project reported to the teacher, I switched to the original idea here to continue the game. We still plan to use the unity engine for development, but due to the characteristics of one stroke, this finished product should be a 2D horizontal version of the platform to solve the puzzle class game, the following project is the demand and UML
Class diagrams are the most common UML diagrams used to describe the structural design of a system. These include class relationships and the properties and behaviors associated with each class. Class diagrams can represent an excellent representation of inheritance and composition relationships. To use the class diagram as an efficient communication tool, the developer must understand how to convert the el
Objective
UML is used to describe the entire design process of the system, and for this process produced a UML9 diagram: Use case diagram, Class diagram, object graph, collaboration diagram, sequence diagram, activity
Document directory
Abstract: this is an article about the unified modeling language, that is, the basic diagram used in UML. In this article, I will discuss the structure diagram, which is a new graph type that has been proposed in UML 2. Since the purpose of this series of articles is to help people understand
description, we should be clear about the relationship between the various relations and what the code is like, the so-called degree of repetition, it is just an extension above. For example, if a and B have a "one-to-many" repetition degree, there is a list in a that stores n references of object B, that's all.
Now, I have finished the class graph relationship above. I hope you will get something better. I have also spent a lot of time (drawing, generating code, writing to blog, alas, a sweat
as parent and child, animals and tigers, plants and flowers.The code generated by ROSE is as follows:# Include "C11.h"
Class C12: public C11
...{
};
5. Template
Here, by the way, the template
The code for the above figure is as follows:Template Class C13
...{
};
Let's talk about the degree of repetition. In fact, after reading the above description, we should be clear about the relationship between the various relations and what the code is like, the so-called degree of repetition, it is jus
above. For example, if a and B have a "one-to-many" repetition degree, there is a list in a that stores n references of object B, that's all. Now, I have finished the class graph relationship above. I hope you will get something better. I have also spent a lot of time (drawing, generating code, writing to blog, alas, a sweat ). However, it is worth it if you can thoroughly understand the relationships of UML class diagrams. :) ++ ++ In
extension above. For example, if A and B have A "one-to-many" repetition degree, there is A list in A that stores N references of object B, that's all.
Now, I have finished the class graph relationship above. I hope you will get something better. I have also spent a lot of time (drawing, generating code, writing to BLOG, alas, a sweat ). However, it is worth it if you can thoroughly understand the relationships of UML class diagrams. :)
++ ++
In
The UML activity diagram records the logic of a single operation or method, a single user case, or a single business flow. To create a UML activity diagram, perform the following steps repeatedly.
Step 1: define the scope of the activity diagram. First, define the modeling
create a class drawing cloth for class design by selecting UML class diagram in.Class Diagram creation
You can create a class diagram by using the tool box on the left, demonstrating the relationships of interfaces, classes, and classes: inheritance, dependency, aggregation, and composition. Enum is no
Design Mode Study Note 1: UML class diagram
The UML class diagram is the basis for learning the design pattern. Through the UML class diagram, you can better communicate with everyone and easily express your own design ideas. It
statements at the common layer once. If you do not need the common layer and the same SQL statements are used more frequently, You need to modify each statement at the time of modification, it is prone to errors.
Layer B is a logical combination of methods in layer D classes to complete a function. It can be said that a specific use case requires a class or method in layer B. Of course, sometimes layer B does not need layer D.
The time sequence diagram
as alternative streams in the parent case.
For example, there may be many tasks that require approval from department leaders in the business, but the approval process is very similar. In this case, the general relationship can be expressed as follows:
The above is an article I have referenced. I think the difference between the three relations is very clear. Based on this, I will combine my own system to explain the project (Online Shopping System) as a whole.
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a lot of computer technology books or articles commonly used in UML class diagram, the author of the book describes each design pattern is the class diagram + Object-oriented language applet ( in C #, its basic knowledge of a different article)+ character dialogue interpretation of knowledge points. This paper introduces the basic knowledge of
Teach () {
......
}
}
4. Interface and Implementation relationshipIn many object-oriented languages have introduced the concept of interfaces, such as Java, C #, etc., in the interface, usually no attributes, and all operations are abstract, only the operation of the Declaration, there is no implementation of the operation. UML represents an interface in a manner similar to the representation of a class, as shown in 3:Figure 3
. Note: The door in "Top level diagram" uses the message arrow to point to the reference fragment, where it is not necessary to draw it as a block.??Partial decompositionAn object can draw multiple lifelines so that messages inside and between objects are displayed on the same graph.State Constants/ContinuationsThe state constant is the constraint of the lifeline, and the runtime is always true. A rectangle displayed as a semicircle on both sides, suc
and is considered an attribute in another local application.(2) The same entity does not have exactly the same attributes in different detail views, or the order of the attributes is not identical.(3) The relationships between entities render different types in different detail views. For example, the entity E1 and E2 are many-to-many links in local application A, but in the local application B is a one-to-many connection, as in the local application of x E1 with E2, and in the local applicatio
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