c class diagram

One: Class diagrams (Behavior classes and entity classes)---> class diagrams are used to show the classes in the system and their relationship to each other---> Conceptual layer class Diagram---> Description layer class DiagramSecond: Concept layer class Diagram---> Concept view: Class Diagrams At this level describe the conceptual understanding of problem areas in the real world. ---> at the conceptual lev

First, time series diagramThe time series diagram is an interaction diagram that emphasizes the chronological order, in which the objects participating in the interaction are first placed above the graph and arranged along the x-axis. Usually the object that initiates the interaction is placed on the left, the lower object is placed on the right, and then the messages sent and received by these objects are

Example: (1) There is a DFD diagram below, where the interval between the vertical dotted line input, transformation, and output, Please convert it into a SC diagram: Solution: we can see from the figure that the left side of the first vertical dotted line is the input part, the center is the transformation part, and the edge is the output part. As a result, we can know that the level-1 SC

System Modeling must be described in terms of system structure and behavior,Static diagram based on the previous UML diagramBlog learning, we canDrawStatic structure of software systemsIn this case, how should we deal with its behavior activities? This article will be used hereArticleInvolvedUMLThe behavior graph is displayed. A behavior diagram is used to describe the interaction between the dynamic m

In the previous article "UML System Analysis and Design 02-use case diagram and activity diagram (I)", we mainly explained the use case analysis and drawing methods and techniques in requirement analysis, however, the use case diagram only tells us what the system wants to do. As for how to do it, there is no intuitive description. To better illustrate how our sy

Main content: 1. Sequence diagram and collaboration diagram. 2. Drawing (computer room charge system). 3. A simple relationship between two diagrams. Body: 1. Sequence diagram and collaboration diagram Sequence diagram (1) Understanding the sequence

After restoring the database backed up by SQL2000 to sql2005, the "database relationship diagram" prompt: the database does not have a valid owner, so you cannot install the database relationship diagram support object "SOLUTION After restoring the database backed up by SQL2000 to sql2005, the "database relationship diagram" prompt: the database does not have a

CSS2.0 box model level plane schematic diagram and 3D schematic diagram 3 pixel problem and solution when floating container is used, the 3px voids are generated under IE6, which is interesting when the right container is not set to the height 3px is inside the right container, and when the height is set, it runs to the left side of the container, So for the layout accuracy requirements, please refer to Exa

1093: [ZJOI2007] Maximum semi-connected sub-graph Time limit:30 Sec Memory limit:162 MBsubmit:3240 solved:1278[Submit] [Status] [Discuss] Description A g= (v,e) is called a semi-connected (semi-connected), if satisfied: U,v∈v, satisfies u→v or v→u, that is, for any two-point u,v in the graph, there is a forward path from U to V or a forward path from V to U. If g ' = (v ', E ') satisfies V '? V,e ' is all the sides in E that are related to V ', then G ' is an export sub-

ObjectiveMost of the UML describes the logic and design of the information. The implementation diagram is used to describe the realization of the narrative information. The implementation diagram contains a deployment diagram and a component diagram.Component diagram1. ConceptComponent diagram describes the main functi

1. What is a sequence diagram is an interaction diagram that emphasizes the time order of messages. A sequence diagram describes the interaction between classes and classes in a class system, and it models these interactions as message exchanges. A sequence diagram is a model that describes how objects collaborate over

Translated andromda3.2 User Manual Use case diagram (use-Cases)Use cases represent a set of logical processing, and the use case names cannot be the same. The version of the use case is Activity Graphs)The activity diagram should be a child element of the use case. Initial status (initial states)Each activity requires an initial state, which indicates the start of the use case. There is no input stream and

first, the concept use case diagram (Diagram): Primarily used to describe the behavior of systems and the relationships between functions, is a graph that describes the relationship between participants (Actor) and use cases, and use cases and use cases. Use case diagram = actor + use case + Relationship II, use use case dia