Want to know uml activity diagram online? we have a huge selection of uml activity diagram online information on alibabacloud.com
A class Diagram shows a set of classes, interfaces, and collaborations and their relationships. These diagrams is the most common diagram found in modeling object-oriented systems. Class diagrams address the static Design view of a system. Class diagrams that include active classes address the static process view of a system. Component diagrams is variants of class diagrams.The class
decoupling. Two-way arrows indicate interdependence. nested : Inside the package can have a package. However, you should try to avoid the use of multi-layer nested package, 2-3-storey. Package diagram example Take the bookstore online ordering system as an example Package Diagrams Precautions -If the package is revoked, then the elements will be removed -Reasonable minimizati
A sequence diagram describes the interaction modes between objects in chronological order. It uses the "lifeline" of objects and the messages passed between them to show how objects participate in interaction. A sequence diagram is a model used to describe how object groups collaborate in certain behavior aspects over time. A sequence diagram captures the behavi
First, the concept of a state diagramA state diagram, also called a state machine diagram, represents the state of a model element during its life. From the start state of the model element, respond to events, perform certain actions, cause the state to move to a new state, respond to an event in a new state, execute an action, cause to move to another state, so continuous, until the state is finalized.In a
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,
arrows can only be nouns or noun phrases, and the entire graph does not reflect the order of execution of the processing.③ generally do not draw material flow. Data flow reflects the data that can be processed by computer, it is not physical, so the flow chart of the target system is generally not to draw material stream.④ has at least one input data stream and one output stream per processing, reflecting the source and processing results of this processing data.⑤ number. If one of the processe
I,Description of the use case diagram Use Case (Use Case) Refers to the interaction between the system's external things (activists, devices, or external systems) and the system. It expresses the functions of the system, that is, the services provided by the system. A Use Case chart is a visualization tool used to describe use cases. It uses simple graphical elements to represent the system's activists, use cases, and their relationships, accurate
Unified Modeling Language (UML. It includes the following important functions: Visualizing) Specifying) Construting) Document creation (documenting) UML includes: User case diagrams) Class Diagrams) Sequence Diagram (sequence diagrams) Collaboration diagrams) Activity d
convert elements on the class diagram to Java. Java is used as a representative to combine some online instances. Below are some basic collection and summary of the individual: basic element Symbol: 1. Class (classes) class contains three components. The first is the class name defined in Java. The second is attributes ). The third is the method provided by this class. You can append a visibility modifier
between two classes. One role name and multiple values are placed at either end of the online group. Multiple values and their representation: Possible multi-value descriptions Indicates Description 0 .. 1 0 or 1 1 Only one 0 ..* 0 or more * 0 or more 1 ..* One or more 3 Only three 0 .. 5 0 to 5 5. 15 5 to 15 Unidirectional Asso
UML has the following diagram: Use case diagram, class diagram, sequence diagram, collaboration diagram, state diagram, activity
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
class diagram to Java. Java is used as a representative to combine some online instances. Below are some basic collection and summary of the individual: basic element Symbol: 1. Class (Classes) class contains three components. The first is the class name defined in Java. The second is attributes ). The third is the method provided by this class. You can append a visibility modifier before attributes and op
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
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)
Object-oriented dynamic modeling, four diagrams of behavior interaction between entities, State diagrams (Stage Diagram), Sequence diagrams (Sequence Diagram), activities (activity Diagram) in front of the blog, we have learned, Today we are going to study the collaboration diagram
is executed, and the extension use cases are not necessarily executed after the underlying use case is executed, and can be selected for execution or not. For example, when the information in the database is modified, the use case of saving the information is bound to be executed, and in this use case, the use case of retrieving the password is extended: The user's password cannot be forgotten and the password will not be retrieved. The contrast between the two can be understood. There is also
can start the active bar immediately below the object rectangle. In a garbage collection environment, we do not delete objects directly, but you can still use the X tag to indicate that the object is no longer needed, please recycle it. It is also appropriate to add an X mark to some end operation, because it represents that the object is no longer available.2. Interactive frame such as loop and conditional mode logicA common topic in time series diagrams is how to draw loops and conditional be
Activity diagram is one of the 5 dynamic modeling mechanisms of UML, is a process-oriented description, and describes the workflow of business use case implementation. The activity diagram is also a special example of the state machine, emphasizing the sequence and concurren
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
