c class diagram

Class diagrams and sequence diagrams are directly associated with program code in software system design. To be precise, program code is directly generated by class diagrams, A Sequence Chart can define a class chart method. The use case diagram is used to describe system functions and has no direct relationship with the sequence diagram. A class diagram consists

Objective:If your UML diagram is still a use case diagram, please keep looking, if you do not know the relationship between the business analysis diagram and the activity diagram, please continue to look, if your computer room is refactoring or the cooperation of the omission function (when I refactor the operator work

state. If the account balance is less than 0 to enter the overdraft status, overdraft status can be both deposits and withdrawals, but the overdraft amount can not exceed 5000 yuan, if the balance is greater than zero to enter the normal state, the normal state can be both deposits and withdrawals, if the continuous overdraft for 100 days, then into the frozen state, The frozen state can neither deposit nor withdraw money, must require the bank staff to thaw. Users can request to log out of an

UML's behavior diagram includes: Activity diagram and State diagram Activity diagrams and state diagrams are diagrams that describe system functions from a dynamic perspective. A: Summary of the behavior diagram: Two: The relationship between several graphs 1, the difference between the activity

Prefaceafter learning the UML time series diagram, we need to look at the UML collaboration diagram, because the two graphs are complementary. definitiondescribe the relationships between objects of mutual cooperation and only model the relationships between objects interacting with each other. compositionObjectat the same time as the sequence diagram, the collab

Introduction What is the relationship between use case diagrams, class diagrams, activity diagrams, and sequence diagrams? What's the role of a timeline diagram? First to simulate the Chibi of the War of the Kingdoms of the sequence diagram, first know what it looks like, and then in-depth introduction: Small partner stunned, such a drawing strategy diagram

PLC uses a ladder chart language that is extremely similar to the circuit diagram of the relay. If PLC is used to transform the relay control system, it is a shortcut to design a ladder chart based on the relay circuit diagram. This is because the original relay control system has been used and tested for a long time and has been proved to be able to complete the control functions required by the system. Th

1. Sequence diagram (Sequence Diagram) is used to display the relationships between objects, emphasizing the chronological order of messages between objects, and showing the interaction between objects. A sequence diagram is a table where display objects are arranged along the x-axis, and messages are arranged chronologically along the y-axis. Sequence diagrams m

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

Document directory Add a self-called Message Element Use the call Message Element Use auto-extended message options Use to create a message symbol Add asynchronous Link Use a combination of fragment Elements Save Graph 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

Tags: compare configuration Direct schema ftp IAT call stage imageBrief introductionA deployment diagram is also called a configuration diagram to display the physical architecture of hardware and software in the system. You can learn about the physical topology, connection relationships, and distribution of the processing nodes between software and hardware components.Deployment

Uml-unified Model Language Unified Modeling Language, also known as standard modeling language. is a language used to visualize modeling software-intensive systems.There are three main models in UML system development:Functional Model: Display the function of the system from the user's point of view, including use case diagram.Object model: Using the concepts of object, attribute, operation and correlation to show the structure and foundation of the system, including class

Tags: kinds of access Interactive. COM program code run Agent execution map Brief introduction Component diagrams, also known as building diagrams, are used to display physical views of the system's components and the relationship of each component. Component diagrams typically include components, interfaces, relationships, ports, and connectors to display dependencies and generalization relationships between corresponding modules, source files, or collections of source files in program code. C

Use case diagram is used in the requirement Analysis stage, describes the functional requirements of a system to be developed, the use Case view emphasizes the function of the system, and is the first design view of the software development design process. It describes the user's snowball from the user's point of view, describing the function of the system, and pointing out the performer of each function and what functions the performer has completed.

sql2005| Backup | objects | resolve | data | Database sql2000 backup DATABASE after restoring to sql2005, select database diagram prompt: This database does not have a valid owner, so the database diagram support object cannot be installed. To continue, first set the database owner to a valid login using the file page of the Database Properties dialog box or the ALTER AUTHORIZATION statement, and then add t

Introduction of Timing Diagram (Brief introduction) time series diagrams (Sequence Diagram) are graphs that display the interaction between objects, which are arranged chronologically. The sequence diagram shows the sequence of message interactions between the objects participating in the interaction and their objects. The modeling elements included in the time s

PrefaceIn the summary of the UML state diagram, the activity diagram and the state diagram are closely related. It also has a lot in common with flowcharts.definitionAn activity diagram is a special form of a state diagram. All or most of these states are active, and all or

Through the previous blog: the use case diagram of UML diagrams, we have completed the division of a software system use case and function module. Now we need to know how to further improve the static structure of the system. With the UML tool, we can obtain the static diagram of the static structure of the software system. The static diagram includes the class

I. Concept of database designDatabase design is the process of planning and structuring the relationship between the data entities in the database and the data entities.Two. Importance of database designIf a database does not have a good design, then after the database is complete his disadvantage is:1. Efficiency will be very low2 There are many problems when updating and retrieving data.On the contrary, a database has been well-planned, with good design, then his advantages are:1. The efficien

Http://www.cnblogs.com/zhaolijing/archive/2013/02/28/2936321.html UML use case diagram-detailed tutorial I. Definition of use case diagram: ByActors and Use Cases)And the relationship between themDescribe system functionsThe dynamic view of is called the use case diagram. Draw a participant (representing a system user) on the example graph to draw a humanoi