Drawing online use case diagram-how to draw use case diagram on demand

How to draw a use case diagram 1: How to draw a use case diagram in visio2007 Steps to draw a use case diagram in visio and UML;

1. On the File menu, point to New, point to Software, and then click UML Model Diagram.

2. In the tree view, right-click the package or subsystem that will contain the use case diagram, point to New, and then click Use Case Diagram.

A blank page will appear and the UML use case template will be displayed at the top. The workspace will display the use case as a watermark. The icon representing the chart will be added to the tree view.

Note If you can't see the tree view, on the UML menu, point to View, and then click Model Explorer.

3. Drag the system boundary shape onto the drawing page.

Use system boundary shapes

Point out the system boundary in the use case diagram.

4. when 4. Visio draws a UML use case diagram, drags the use case shape from the use case stencil and puts it inside the system boundary, and then drags the participant shape outside the system boundary.

Using use case shapes

Use participant shapes

5. Use the shape of "communication" to express the relationship between use cases and participants.

Use communication shapes

Point out the relationship between participants and use cases.

6. When drawing UML use case diagrams, Visio needs to point out the relationship between use cases through "use" and "extension" shapes.

Point out the usage relationship between the two use cases and the extended relationship between the two use cases.

7. Double-click any shape (except the system boundary shape) to open its UML Properties dialog box, where you can add names, properties, actions and other properties.

8. Save the chart.

Question 2: How to draw a use case diagram How to draw a use case diagram in Visio Steps: 1 On the File menu, point to New, point to Software, and then click UML Model Diagram. 2. In the tree view, right-click the package or subsystem that will contain the use case diagram, point to New, and then click Use Case Diagram. A blank page will appear and the UML use case template will be displayed at the top. The workspace will display the use case as a watermark. The icon representing the chart will be added to the tree view. Note If you can't see the tree view, on the UML menu, point to View, and then click Model Explorer. 3. Drag the system boundary shape onto the drawing page. Use system boundary shapes to indicate system boundaries in use case diagrams. 4. When drawing a UML use case diagram, Visio should drag the use case shape from the use case stencil and put it within the system boundary, and then drag the participant shape outside the system boundary. Use case shape uses participant shape 5. Use communication shapes to indicate the relationship between use cases and participants. Use communication shapes to indicate the relationship between participants and use cases. 6. When drawing UML use case diagrams, Visio needs to point out the relationship between use cases through "use" and "extension" shapes. Point out the usage relationship between the two use cases and the extended relationship between the two use cases. 7. Double-click any shape (except System Boundary shape) to open its UML Properties dialog box, where you can add name, function, operation and other properties. 8. Save the chart.

Question 3: How to draw UML2 series block diagram with use case diagram-detailed explanation of use case diagram.

trufun/...8

Question 4: There are basically two ways to draw a use case diagram of a function point: 1. Using visio software is easy to learn and use. It is also a series of office software, so it is very compatible with word. 2.windows comes with drawing tools. This picture is very neat. Point to start DD "All programs DD" Attachment DD "drawing.

Question: How does word draw a use case diagram? First, insert the DD organization chart of DD picture. This method is simple, but not very beautiful;

Method 2: Draw a rectangle (first draw one, then copy the number you want, then align it, and finally add text to the rectangle) dd Draw a line connection (you can freely choose the shape of the line).

Question 6: How to draw what the system has done in the use case diagram? Use case is a contract, which is a contract reached by stakeholders in the system on system behavior. Through semi-structured natural language, it describes what kind of system behavior should happen when the system responds to requests initiated by stakeholders under the same conditions. It can be seen that use cases view and define the system from the outside of the system. So if the system does it itself, it should be a step in the use case, not a separate use case. Of course, if it is a task that the system automatically starts at regular intervals, it is a timed use case if it does not automatically scan and send SMS notifications every 30 seconds. At this point, ACTOR is a timer program.

Question 7: What tools are used to draw use case diagrams? Visio, create a new 3D software and database DUML model diagram DUML use case, which contains the required icons.

Question 8: How to draw the villain in the use case diagram in word? Is it used in physics papers? There is a "physical icon" in WORD (template)

Directory: Software > Office Applications

Question 9: How to draw the generalized relationship between participants in uml use case diagrams? For details, please refer to the online help of trufun website, and there are detailed element examples in UML block diagram.

What drawing tool is used to draw the system use case diagram? The system use case diagram can be drawn in Word.

Draw an illustration in Word as follows:

1. First, open Word to create a canvas, and then click Insert Middle Shape.

2, and then click on the bottom of the new drawing canvas.

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3. Then you can see a white box in Word.

4. Then, you can draw the corresponding shapes according to the use case diagram, and select the required graphics.

5. After selection, you can see the graphics displayed on the canvas.

6. If you need to modify the shape's fill and outline, you can click Shape Fill-Shape Outline-Theme Color to adjust.

7. Finally, add text, and the chart can be completed.

How to draw a use case diagram in the demand UML use case diagram is mainly used to explain the main event flow of the system, mainly used to describe the customer's demand, that is, the actions that users want the system to complete certain functions. It is the starting point of the analysis stage of the design system, so the designer creates and explains the use case diagram according to the customer's needs to describe which functional modules the software should have and the calling relationship between these modules. Use case diagrams include use cases and participants. Use cases reflect the overall structure and function of the system to non-technical personnel (usually users of software) through association and connection, which corresponds to the decomposition of software structure and function. A use case is a behavior visible from the outside of the system, which is a complete service provided by the system for one or several participants. In principle, use cases are independent and parallel, and there is no affiliation between them. However, in order to reflect the business relationship between some use cases and improve maintainability and consistency, several relationships can be abstracted between use cases, including inclusion, expansion and generalization. * * * *: Extract common information from existing use cases as a single use case, and then reuse common use cases in different ways to reduce the workload of model maintenance. 1. Inclusion relation: Use inclusion cases to encapsulate a set of similar actions (behavior fragments) that span multiple use cases, so that multiple basic use cases can be reused. The basic use case controls the relationship between the basic use case and the included use case, and whether the event flow of the included use case will be inserted into the event flow of the basic use case. The basic use case can depend on the execution result of the use case, but neither party can access the properties of the other party. A typical application that includes relationships is reuse, which is the scenario mentioned in the definition. But sometimes when the event flow of a use case is too complicated, in order to simplify the description of the use case, we can also abstract an event flow into an included use case; On the contrary, when the use cases are divided too finely, a basic use case can also be abstracted, including these fine-grained use cases. This situation is similar to encapsulating a program's algorithm into a subprocess in the process design language, and then calling this subprocess from the main program. For example, in business, there is always the function of maintaining certain information. If it is a use case, it is too complicated to create, edit and modify in the details of the use case. If it is divided into adding use cases, editing use cases and deleting use cases, the division is too fine. At this time, we can use the inclusion relationship to clarify the relationship. 2. Extended relationship: A relatively independent and optional action is encapsulated in the basic use case with an extended use case, and then extended from the ExtensionPoint declared in the basic use case, thus making the basic use routine more concise and focused. Extended use cases add new behaviors to basic use cases. The extended use case can access the properties of the base use case, so it can judge whether to execute itself according to the current state of the extension point in the base use case. But the extended use case is invisible to the basic use case. For extended use cases, there can be several extension points on the basic use case. For example, the system allows users to export and print query results. For a query, whether it can be exported or printed is the same, and exporting and printing are invisible. Import, print and query are relatively independent, and new behaviors are added to the query. So it can be described by extension relation: 4. Generalization and generalization relationship: the child use case is similar to the parent use case, but it shows more special behavior; The child use case will inherit all the structures, behaviors and relationships of the parent use case. A child use case can use the behavior of the parent use case or overload it. Parent use cases are usually abstract. Generalization relations are rarely used in practical applications, and special behaviors in child use cases can exist as alternative flows in parent use cases. For example, there may be many things that need to be approved by department leaders in business, but the process of approval by leaders is very similar. At this time, it can be expressed as a generalized relationship:

The above is an article I refer to, and I feel that the differences between the three relationships are made clear. On this basis, combined with my own system, the use case of the project (online shopping system) is described as a whole. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

(Commodity Use Case Diagram)

(Purchase Information Use Case)

(User Profile Use Case)

First, it is described according to the overall use case, and then the subsystem use case. Welcome to make good suggestions! The difference between extension and generalization in UML is similar to the OO term "inheritance" or "polymorphism". The generalization process of use cases in UML is to abstract the mergeable parts between different use cases into independent parent use cases, and separate the non-mergeable parts into their own child use cases. The process of inclusion and expansion is similar to the process of generalization, but the optimization emphasis of the three is different. As follows:

● Generalization focuses on mutual exclusion between sub-use cases;

● Inclusion pays attention to the indirectness of use cases when providing services to Actor;

● Extension focuses on extending the trigger uncertainty of use cases; The details are as follows: Because use cases are UML expressions of services provided by the system, the service process is inevitable in all use case scenarios, but it can be divided into the following two situations according to the occurrence conditions:

1. Unconditional occurrence: it will definitely happen;

4. Conditional occurrence: it may not happen, but it depends on the system state; Therefore, considering the three relations of use cases and the system state, generalization and inclusion use cases belong to unconditional use cases, while extension belongs to conditional use cases. Furthermore, use cases exist to provide services to Actor, but the ways in which use cases provide services can be divided into indirect and direct ways. Accordingly, the sub-use cases in generalization provide direct services, while the included use cases in inclusion provide indirect services. Similarly, extended use cases provide direct services, but the emergence of extended use cases is conditional. Another point to mention is that both sub-use cases in generalization and extended use cases in extension can exist as optional streams of basic use case events.