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, generalizati
The use case diagram mainly includes use cases, activists, and relationships.
Use Cases: A description of the sequence of actions that the system, subsystem, or class interacts with external participants, including various normal sequences and error sequences.
-digit combined subtraction and 1~9 multiplication can be completed.
Living/Working Conditions:
Learn to work hard
Motive, purpose, difficulty:
To complete homework
User preferences:
Play computer games, play with friends
User ratio:
50%
Typical scenario:
Come home from school, homework.
Typical description:
Knowledge Changes Destiny
Requirements Analysis:1. There is a chron
Typical usersName: Small StoneGender: MaleOccupation: Second Grade primary school studentIncome: NoneKnowledge level Ability: Second grade in primary schoolLiving/Working conditions: Parental support, no workMotivation, purpose, difficulty: Want to test your own computational speedUser preferences: Play,Typical scenario: After coming home from school, Lao Chen learned about his studyTypical description: The higher the correct rate, the better the small stone studyName: Lao ChenGender: MaleOccupa
In all UML diagrams, the most easy to understand is the use case diagram, which is also a UML diagram with the least elements, and also the most handy one for product managers.
I. Purpose
The use case
I. DefinitionUse case diagram describes the system function model diagram observed by external users of the system. external users are called "Participants", and system functions are presented in the form of "use cases, it is mainly used to model the functions of systems and subsystems.Ii. Basic Content 1. Participants
Introduction
The database design phase of the data room charging system was completed a few days ago. After the completion, I was not in the next stage, for fear, I am afraid that the professional courses and advanced courses do not have a reasonable plan of time, which leads to chaos on a daily basis. I am afraid that my thinking will fall into the dilemma that I don't know which one to learn, and eventually I will not learn anything, therefore, I made a decision to learn about my professiona
Is a simple use case chart
The Use Case chart is mainly composed of a villain, an elliptical person, and an arrow. It looks pretty nice. So why is it used to pinch the villain and an elliptical person? What does it mean? After reading it, you will know it.
Use
Tags: blog HTTP use ar sp 2014 log ad BSDisplays the core functions of the system and its usersThe user is called an actor)Use case diagram composition:User (actor), use caseUse Case using an elliptic RepresentationTo simplify the
When you use Microsoft Visio to draw a use case diagram today, you find that the include relationship is not found in the Visio UML use case, which is the "arrow" + "Finally, a workable solution was found:First: Open the UML Model
requirements to the final implementation. In UML, use case diagrams are used to visualize the behavior of systems, subsystems, or classes, so that users of the system can better understand the purpose of these elements, software developers can also ultimately implement these elements.
In reality, for users, how the system is implemented and how the internal structure of the system is not what they care abo
Use case diagram
the use case diagram describes a Function Unit , help the development team to understand the functional requirements of the system in a visual way. The following elements are contained in the
The need for each product is a description of a specific problem in the real world, and some of the problem descriptions can be very intricate, so that when we analyze it, we feel we are not able to do it or even get overwhelmed.
Demand analysis is the basis of system design and development, the quality of demand analysis will directly affect the subsequent design and development, the serious impact on the success of the system. The use
Typical usersName: Lao ChenAge, Gender: 41 years old, maleOccupation: TeacherRevenue: 200,001 yearsMotivation: Work too busy to spend time with childrenUser preferences: Research computer, readingUser ratio:?Typical scenario: Work too busy without time to help children learn, and hope to have a software to help children learn.Typical description: Hope to use this software to help small stone, improve academic performanceName: Small StoneAge, Gender: 8
migrate. The state diagram can be converted into a control flow chart of a program.
Test Case Generation rules
To combine the test cases of State Migration (test path) with the test cases of the Logical Model (local test case), a functional diagram is used to generate practical test cases, in a structured State Migrat
1. Activity diagram model based on UML2 Standard
An activity diagram can represent a business or software process in the form of a workflow through a series of operations. An activity diagram can be used to describe various types of processes:
It can represent the business flow or workflow between the user and the system;
It indicates the sequence of steps execut
Test Case Design White paper-Causal diagram methodAuthor:vince Source: Http://blog.csdn.net/vincetest
I. Method Introduction 1. Definition: A method for designing test cases by using graphical analysis of various combinations of input, which is suitable for checking the various combinations of the input conditions of the program. 2. The background of causality diagram
to determine the judging condition by mapping multiple inputs which interact simultaneously. The final result of causality diagram is the decision table, which is suitable for checking the various combinations of program input conditions. The use of Causality diagram method can help us to select a set of efficient test cases according to certain steps, and also
include the computer and simulate the business scenario from a human-machine interaction perspective. This is a conceptual model that expresses how a user's actual business is implemented in a computer environment, giving users a preliminary impression of how they will do business in the future. Note that while the computer is already involved in the requirements description, try to avoid the use of computer terminology, because the document is still
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