I have used dozens of UML tools over the years. I think it is best to use only two of them: Visual paradigam and magicdraw UML. As for the famous Rational Rose (Now IBM Rational Rose), it is the biggest and most difficult to use monster I have ever seen.
What is ease of use? In my experience, two conditions must be met: fast and beautiful.
1. Fast, that is, easy to use. Imagine that you have prepared a doze
The "activity diagram" displays business or software processes as workflows through a series of operations. These operations can be performed by people, software components, or computers.The activity diagram can be used to describe various types of processes. The specific examples are as follows:Business flow or workflow between the user and your system. For more information, see user requirement modeling.The steps in a specific use case. For more information, see the
tends to use attributes on small things, such as dates or Boolean values, and they are usually value-form things. On the other hand, I'm going to use correlations on classes that have significant significance, such as customers or orders. At the same time, it is also inclined to use class four square to draw a class with significant significance, which will also lead to the use of associations; On the other hand, I will represent unimportant things a
Introduction:This period of time will be devoted to writing UML blog, due to the limited ability of individuals, if the blog errors in the place also asked the vast number of Bo friends to criticize. In order to better understand a process or thing, people usually build a model based on certain characteristics (shape, structure, or behavior) of the object being studied. A model is an abstraction of a system from a particular viewpoint, which can be a
1. Introduction to UML
UML (Unified Modeling Language) is a visual modeling language that is well defined, easy to express, powerful, and universally applicable. It integrates new ideas, new methods, and new technologies in the software engineering field. Its scope is not limited to supporting object-oriented analysis and design, but also supporting the entire process of software development starting from r
documents, it can be based on the actual situation, actual needs, flexibility, and appropriate UML diagrams.
To sum up, for the relationship between the macro soft work document and the UML diagram, it is necessary for us to understand the functions and objectives of the document and the corresponding document of the UML diagram before we
name that differs from the other package. The name of the model package is a string that can be divided into simple names and path names .Simple name: refers to a package that contains only a simple name.pathname : Refers to the name of the outer package that the package is located in as a prefix.3, the role of package diagrams:Package diagrams can describe the requirements, the design of the high-level overview, package diagram through the rational planning of their own functional response sys
ObjectivePrevious "Functional Programming Primer classic", wordy long, many small partners see foggy. Here is an example of how functional programming is fascinating and interesting. Of course, there is no point in writing code just for example, and the example provided in this book is a specific project or tool that takes on a task, which is naturally not the exception.This book uses a lot of UML class diagram, often have small partners asked me what
object graph is an example of a class diagram that shows a possible snapshot of the system execution at a point in time.The appearance that might be present.An object graph differs from a class diagram in that it represents an object with an underlined object name, showing all instances in a relationship.4. State diagramA supplement to the class description that shows all the states that the class's objects may have, and the events that cause the state to change. The change in state is called a
case diagram and should be case-driven.
Relationships in UMLThere are four relationships in UML:
(1) Dependency
Dependency is the semantic relationship between two model elements. Changes in one element (independent element) affect the other element (dependency element) meaning (that is, "dependency element" is referenced in "independent element "). In the image, draw dependencies into a line that
function requirements of the first submodule are completed.
9. Withdrawal sub-requirement module.
10. User Login Sub-module
11. Query the Balance sub-module.
12. User Interface module.
13. Drag all requirements to the functional requirements module to display.
14. Add a label to describe the name of the project--->ATM system functional requirements analysis.
Two. Use case models
1. Add 1 Actor---> Users
2. Add 3 Use Case: query balance, user login, withdrawal
The relationship bet
I am not an architect. Writing this content is just a personal summary for your reference.
When talking about system architecture, we often hear statements like "three-tier architecture" and "multi-tier architecture, however, the strict UML design does not directly describe the "layer" image; in a typical architecture design document based on the "4 + 1 View", there is also no explicit requirement for "layer" image analysis.
[Note: If you like "layer
The package diagram and Use Cases Written in UML last time: connect to: UML from requirement to implementation --- package diagram
According to the sequence of appearance in the UML diagram. After the package diagram is completed, the next step is the class diagram. The class diagram is also one of the three core diagrams in
Summary of the main points of UML modeling in the previous article (1) describes some basic knowledge of UML. This article introduces several common tools of UML,
I. netbeans UML plug-in is free, concise, and powerful.Ii. IBM's RSA (the upgraded version of rose, based on Eclipse), the current version is 7.5, and the f
Various diagrams in UML are an important part of the UML model. In recent articles, I will introduce nine important diagrams in UML. The general content is shown in the following directory.
1. use case diagram, class diagram, and object Diagram
2. Sequence diagram and collaboration Diagram
3. Activity diagram and status diagram
4. Component diagram and deployment
Unified Modeling Language (UML) also known as Unified Modeling Language or standard modeling languageI. The role of UML1. Ability to look at the structure, behavior, and function (requirements) of the system from different angles. 2. It is not enough to be able to think about the system at different levels of abstraction, but only the source code. Source code is a very granular internal structure that cannot be used to build complex systems. ii. defin
Object-oriented modelObject-oriented model is a model that uses UML (Unified Modeling Language) to describe the system structure, and it realizes the working state of the system from different angles. These graphs facilitate information exchange between users, managers, system analysts, developers, testers, and other personnel. This article mainly introduces use case diagram, Sequence diagram and class diagram.1. Object-oriented model OomObject-orient
, and other supplements.
InterfaceBefore this article, we recommend that you consider classifier using classes. In fact, classifier is a more general concept, including data types and interfaces.
The complete discussion of when and how to efficiently use data types and interfaces in the system structure diagram is not covered in this article. In this case, why should I mention data types and interfaces here? You may want to simulate these classifier types on the structure chart. At this time, it
Labels: UML visual object-oriented data center Charging System
The nine types of images have finally been drawn, and they have been entangled for a while. Fortunately, it is done. Although there are still some shortcomings, it is finally defeated. The following describes the drawing process.
I. use case diagram
The first UML diagram should be a use case diagram. This is the prerequisite for drawing. It is
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