cat6 diagram

UML Class diagram: To understand the class diagram of the lines between the various classes, what the arrow means is enough to deal with day-to-day work and communication, and we should be able to match the meaning of the class diagram to the final code; With this knowledge, there is no problem with the design pattern structure

0, the process of using E-R method to design the database concept is discussed. A : the use of E-R method for database conceptual design, can be divided into 3 steps: First, the design of local E-R mode, and then the local E-R model integrated into a global E-R mode, and finally the global E-R mode optimization, get the final E-R mode, that is, 1, a university realizes the credit system, the student may choose according to own circumstance the course. Each student may take a number of courses at

Labels: UML class diagram This article is your own learning notes. You are welcome to repost it, but please indicate the source:Http://blog.csdn.net/jesson20121020 Previously, the diagram drawn in the factory method mode was not strictly in line with the UML class diagram, so I took a look at the UML class diagram

Address: http://developer.51cto.com/art/201006/205392.htm This section briefly introduces the UML class diagram symbols, each of which has different meanings. I hope you will have some knowledge about the UML class diagram symbols through this section, next let's take a look at the detailed introduction of UML class diagram symbols. UML class

In UML, the implementation of use cases is specified and described using an interactive diagram. The interaction diagram shows the relationship between objects and the messages processed between objects to model the dynamic characteristics of the system. There are two types of interaction diagrams: sequence diagram and collaborative

Unified Modeling Language (UML) use case diagramThe use case diagram describes a functional unit provided by the system. The purpose of the use case diagram is to help the development team understand the functional requirements of the system in a visual manner, including the relationship between "Roles" based on the basic process, and the relationship between use cases in the system. The use case

In my study of design patterns, I used UML for modeling.At first I was not too clear on the understanding of the various relations, on the internet also searched some information, now on the class diagram of these kinds of relationships: dependency, association, aggregation, composition, generalization, implementation of a description.First of all, we need to know two points:1. Order of their relationships: generalization = implementation > Compositio

Drawing a picture for a while, it becomes increasingly felt that the EA is a powerful software, not just a drawing tool so simple. With the extension of learning time, now the code is not as arbitrary as before, think of what to knock on what, but to first draw (that is, the process of demand and thinking), but for now we, there will always be considered not comprehensive place, then hit the code when there are a lot of changes, and will be more and more, And the project acceptance of the code a

Today, the circuit diagram of SD card module, found that the operating voltage of SD card is 3.3V, so need to use voltage regulator chip to convert 5V power supply to 3.3V voltage, so a little bit about the voltage regulator chip data We choose the voltage regulator chip is asm1117-3.3, encapsulated as SOT-223 But in the drawing of the schematic diagram of the problem encountered, we found in the schemati

Objective As we all know, Visual Studio 2010 has made a lot of effort on every aspect of the software development cycle, and this article goes on to show you how to use Visual Studio 2010 to support activity diagram, and to use Visual Studio 2010 Method of refining business process. Background Previous: Using Visual Studio 2010 from Analysis to implementation (1)--installation of Visual Studio CTP2 Not familiar with the activity

The importance of a streaming diagram (Dfd-data Flow Diagram) makes it important for system analysts to figure out what to do. So how do we draw a streaming chart? What is the difference between a streaming diagram and a system flowchart? Steps 1 What is included in the streaming diagram The data flow

Sequence diagram, English name Yue: Sequence Diagram, also known as sequence diagrams and sequence diagrams, is a behavioral graph, which shows the dynamic collaboration between multiple objects by describing the chronological order in which messages are sent between objects. She can represent the order in which the use cases are performed, and when a routine is executed, each message in the sequence

This is a creation in Article, where the information may have evolved or changed. First, the conclusion is listed in the front: Golang performance can be very good, but some native package performance is likely to be retarded, such as RegExp and Encoding/json. If used in high performance requirements, we should optimize according to the actual situation. The use of ON-CPU/OFF-CPU flame diagram is a sharp weapon of program performance

Page Diagram highcharts Practical Tutorial Chart Area page Chart highcharts chart areaThe chart area is the basic area of the chart. All the data and graphics are plotted in the chart area. From the drawing range, the chart area is divided into the outer chart area and the plot area. This chapter explains the settings and creation of the chart area in detail.Page Diagram Highcharts chart area compositionFor

Start learning the UML modeling language, starting with the use case diagram. Modeling Tools Select VisioThe use case diagram describes the system functions understood by the participants, the main elements being use cases and participants, and helping the development team to understand the functional requirements of the system in a visual way. At this time in the project initial, analysis of the user needs

I. Purpose It is used to describe the static structure of the system. In all UML diagrams, class diagrams are the most familiar to us. We may have seen them when we are not in contact with UML. Class diagram, as early as in vs2005, there is a small icon "View class diagram" under "solution Resource Manager", and it also supports "Forward" and "reverse" engineering. First, we define two classe

system function diagram Student use case diagram Teacher use case diagram The teacher through the achievement management may carry on the achievement entry and the examination student achievement, through the teaching management may carry on the calendar year data inquiry and the individual timetable inquiry and so on, through t

Additional questions: Deployment diagramKey concepts:1. The deployment diagram shows how specific software artifacts, such as executables, are assigned to a compute node (something that has a processing service). The deployment diagram represents the deployment of the software elements on the physical architecture , as well as the communication between the physical elements (usually over the network).2. The

10. Status machine diagram state machines diagramA state machine diagram is a common technique for describing a system's behavior. In an object-oriented approach, a state machine diagram is drawn for a single class to demonstrate the life cycle behavior of a single object.See Figure 10.1The diagram shows a state machin

I think the correct sequence of Data Center reconstruction is: database, drawing (package diagram, class diagram, timing diagram), and the implementation of code at the end of the document. However, although I think so, I did not fully follow this process. In my opinion, the Plan and sequence are dead, and people are living. What if you do not go down after a cer