uml diagram software

Discover uml diagram software, include the articles, news, trends, analysis and practical advice about uml diagram software on alibabacloud.com

The UML use case diagram contains three types of relationships: (include), (extend), and (generalization ).

, 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.**************************************** *************************(1) overall system use case diagram Follow the overall use case first, and then the subsystem use case to describe it

Meanings of UML diagram symbols

in Java. The difference between Association and aggregation is purely conceptual and strictly reflected in semantics. Aggregation also implies that there is no loop in the instance diagram. In other words, it can only be a unidirectional link. Figure F Composition) Synthesize (Figure G) Is a special form of aggregation, suggesting that "local" is responsible for the lifetime of the "whole. Synthesis is not shared. Therefore, although local data may

Comprehensive Analysis of UML class diagram relationships

UML class diagram relationships include association, aggregation/combination, dependency, and generalization (inheritance ). The Association is divided into two-way Association, one-way Association, and self-Association. Let's take a look at what these relationships are and what their differences are. 1. Association Bidirectional Association:C1-C2: both parties know the existence of the other side, can call

UML Class Diagram

member variable;Dependency relationship (dependency)A dependency is represented by a set of dashed lines with arrows, such as a dependent on B; He describes the relationship of an object to another object while it is running;Unlike association relationships, it is a temporary relationship that usually occurs during operation and changes with the runtime, and dependencies can change;Obviously, the dependence also has the direction, the bidirectional dependence is one kind of very bad structure,

UML Class Diagram

Symbol:+:p Ublic-:p Rovite#:p Rotected~:p ackageRelationship: Relationship Name Code relations Uml Generalization (generalization) Inherited Solid Line Triangle Arrow Implementation (Interface realization) Implementation of subclass inheritance of virtual base function Dashed triangular arrow Dependency (Dependency) One class as a function parameter or ret

Comprehensive Analysis of UML class diagram relationships)

This article reprint casually, Please retain the Source: http://blog.csdn.net/dylgsy/ UML class diagram relationships include association, aggregation/combination, dependency, and generalization (inheritance ). The Association is divided into two-way Association, one-way Association, and self-Association. Let's take a look at what these relationships are and what their differences are. 1. Association

UML use case diagram (1)

Use Case Diagrams are used to determine the scope of requirements. These requirements are the basis for design and development. The use case diagram treats the system as a black box and understands the system from the perspective of external executors. As shown in Figure 12.2, the use case in the figure is a typical scenario between the user and the computer. Figure 12.2 use case diagram

UML diagram Overview

), Remove the rinse water (Send RINSE WATER. 6. Activity diagram The activities in use cases and objects are usually in chronological order. 7. Collaboration Diagram The purpose of the system is to collaborate with each other by the components in the system. In this example, an Internal timer (Internal timer). After a period of time, the timer stops the water injection and starts the round-trip

UML's use case diagram arrow direction

UML Case Diagram (use cases) arrow direction:Always forget the direction of the arrows, provoke jokes.1, association, no arrows, actor connection usecase can;2, Directedassocition,actor connection UseCase, arrow by actor point to usecase (role point use case);3, generalization, inherit, I read it as " inherit in ", of course, the arrows point to the father;4, Dependency, I read " depends on", I know the dir

The UML sequence diagram is automatically generated based on. NET code.

Sequence dimo-generator for. net I was recently asked about programs that can be automatically generate sequence diagrams from code. while this seems like a somewhat trivial task, there aren't any good ones. I figured I 'd share what I knew, tho. maybe someone else knows of something better. The first option that came to mind was Visio. I have to admit I'm not a fan of Visio. if you're designing or documenting network topology, I'm sure it's great. I don't do that, tho. I work with

Relationship in UML use case diagram

The previous blog summarized the use case diagram, in which the relationship between use cases is only included, because the relationship between use cases is not particularly profound. This is also because the UML use case diagram has not passed the acceptance of the master. The relationship between use cases must be further understood. This blog will summarize

Using grasp principle to do UML interaction class diagram-------POS machine instance

Several important grasp principles: 1. Controller mode 2. Creator mode (principle) 3. Information Expert mode (principle) 4. Cohesion Poly-low coupling The pattern described here is not a design pattern for specific events in JavaSeveral operations for the main success scenario: 1.makemewsale 2.enteritem 3.endsale 4.makepayments1) Consider the interaction diagram: Refer to the contract of operation to----Our first consideration is to select the contro

UML-use case diagram

ArticleDirectory (1) from the perspective of general users (2) From the operator's perspective (3) from the Administrator's perspective Drawing a use case diagram is the first step from the software requirement to the final implementation. Its correctness directly affects the user's satisfaction with the final product. In fact, we can also say that use cases are what the participants w

UML (6) -- state diagram

A state chart is a modeling of System Dynamics. It describes the dynamic behavior of an object over time by creating a life cycle model of a Class Object. A status chart is used to describe the behavior of an instance of a model element. It is used to describe the status and action sequence and can display the state owned by an object, it can also explain how events affect these states over time. State Machine A state machine is a device that records the state at a given time. It changes its st

UML-implementation Diagram

The implementation diagram describes the actual information. It describes the composition and layout of hardware at the system level, as well as the Division and function implementation of software systems. The implementation diagram includes: Deployment diagram: Describes the physical topology of the system hardwa

Use case diagram of UML

Use case diagram Structure 1Roles: Personnel roles-people and events; Roles are not necessarily limited to people. They can also be things or things. 2. Use Case: function description; Each use case describes a complete system service. 3System boundaries 4Relationship: the relationship between executors and use cases. Generalization Dependency Association Aggregation and combination Implementation You can read books, roles, system boun

UML-class diagram

Class diagrams are the most commonly used diagrams in UML. We can see that class diagrams are very important. A class chart is a class digoal. The shape is very simple. It consists of a rectangle, two rectangles, or three rectangles. For example: The top column shown in is the class name. The second column is the class property. (A class can have one or more attributes. Of course, some classes have no attributes) the third column is the cl

design mode UML Model diagram

. Proxy modeIntent: Provides a proxy for other objects to control access to this object.21. Single case (Singleton) modeIntent: Ensure that a class has only one instance and provides a global access point to access it.22. Status (State) modeIntent: Allows an object to change its behavior when its internal state changes.23. Policy (strategy) modeIntent: Define a series of algorithms, encapsulate them one by one, and make them interchangeable with each other.24. Template Method ModeIntent: Define

UML Simple Comb class diagram

consistent.Just, the class involved in the association is logically a level, such as the student teacher above, but the aggregation involves the class is not a level.Look at the following example:It can be expressed as a has a/some B, at which point B is able to separate from a and exist independently. Without a car tire or a tire.Combination compositionThe composition relationship is a bit tighter than the aggregation relationshipThe limbs and the people are die.Non-separable.As for generaliza

Diagram of the relationship between use cases in UML

Http://www.cnblogs.com/gisdev/archive/2007/11/15/959843.html The use case diagram is used to analyze a system. The relationship between use cases must be considered during this period. Find the following information.Body:The use case diagram is mainly used to illustrate the main event process of the system. It is mainly used to describe the customer's needs, that is, the user wants the system to perform ce

Total Pages: 15 1 .... 11 12 13 14 15 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.