incubator diagram

Class diagram, the British Civilization Yue: Class diagram, then the class is after how magical transformation, into a class diagram? As we all know, classes are descriptors of a set of objects with similar structures, behaviors, and relationships, classes are the most important building blocks in object-oriented systems, and class diagrams show a set of classes,

An introduction to the graph of adjacency matrix The direction graph of adjacency matrix refers to a direction graph expressed by adjacency matrix. The above figure G2 contains a total of 7 vertices of "a,b,c,d,e,f,g" and contains " The matrix on the right of the above figure is a schematic diagram of the adjacency matrix in memory of the G2. A[i][j]=1 means that the first vertex to the J Vertex is an edge, a[i][j]=0 represents not an edge, while

OverviewTime series diagrams (Sequence Diagram) describe the chronological order in which messages are routed between objects, which are used to denote the order of behavior in a use case.The time series diagram contains 4 elements, namely the object (OBJCE), the Lifeline (Lifeline), the message, and the activation (Activation).Time series diagrams in UML are represented as two-dimensional graphs. Where the

An old programmer of Pancake Hall 2017/10/12 9:40:59 Qingrun Ask a question, please. Green Run 2017/10/129:44:47 Said Let's be polite about this. If you have any questions, just say that, as long as I have the time, I will reply directly. An old programmer of Pancake Hall 2017/10/12 9:45:31 How can you do that, you're busy. I know It's about the UML sequence diagram. General messages are left-to-right Can you go from right to left? Green Run 2017/10/1

Introduction The learning of UML started on the 3rd and ended on the evening of the 13th. Today (Nov 14), I reviewed UML and refined the following learning tasks. The overall learning of UML is similar, but there are still many areas to be improved. Learning Process At the beginning of UML learning, I first spent half a day on the concept of UML. The main method is to query materials and watch books online, and then watch the UML video, during the watching process, I watched the video quickly. A

Most of the models in UML describe the logic and design information: Use Case chart to understand expectations Class diagrams can understand the Vocabulary (class and object) of the problem domain) The status chart, InterAction diagram, and activity diagram can be used to understand how the words in the class diagram are written (logical structure)An Implementati

I started to draw the UML diagram from June 1. Now it's over a month and a half! Let's talk about my feelings with UML diagrams over the past one and a half months: Phase 1: September 5-September 5 1. Example Diagram The use case diagram mainly refers to the functional model diagram of the system, and has the first dra

Sequence diagramA sequence diagram is a form of an interaction diagram that shows the evolution of an object along a lifeline, and the interaction between objects over time is expressed as a message from the source lifeline to the target lifeline. The sequence diagram is a good indicator of how those objects communicate with other objects, what messages trigger t

In This article, we focus on UML time series diagrams, which include modeling elements in the main sequence diagram: Objects (Actor), lifelines (Lifeline), Focus control (Focusofcontrol), messages (message), and so on. First, the UML sequence diagram Brief introduction (Briefintroduction)time series diagrams (Sequencediagram) are graphs that display the interaction between objects, which are arranged in

Activity diagram is one of the 5 dynamic modeling mechanisms of UML, is a process-oriented description, and describes the workflow of business use case implementation. The activity diagram is also a special example of the state machine, emphasizing the sequence and concurrency steps in the calculation process, where most of the state is active, and most of the transitions are triggered by the completion of

The e-r graph , also known as the entity-contact graph (Entities Relationship Diagram), provides methods for representing entity types, attributes, and connections to describe the conceptual model of the real world.1 , Presentation methodE-r is an effective method to describe the conceptual structure model of the real world. is a way to represent a conceptual model.(1) Rectangle: Indicates the entity type, the name of the entity is indicated in the re

UMLThe use case diagram is a very useful graph. In demand analysis, it can free people from the heavy documentation, in addition, it prompts people to express their meaning more accurately and intuitively when making demands. Common languagesThe word is often unable to express a thing clearly. At this time, it needs to be expressed in other ways. The example graph is a good method, of course, the use case diagram