Development Background
Our company is mainly engaged in the development of enterprise speech products, such as scheduling systems, command systems, teleconference systems, and call center systems. These systems share a common feature, that is, they involve calls, playing, sending and receiving buttons, and venue operations. Our business products are built on our softswitch system. The application servers of the softswitch system provide these services externally.
Problems
We found a
generalization and the extended use cases in extension can be used as the backup selection stream of basic Use Case events.
Activity diagram:
The UML activity diagram records the logic of a single operation or method, a single user case, or a single business flow. In many ways,Activity diagramIt is the object-oriented equivalent of a flowchart and a data flowch
For complex practical problems, there are usually dozens or even dozens or hundreds of processes on the data flow diagram. Such a data flow diagram looks unclear. The hierarchical data flow diagram can solve this problem well.
S
Detailed explanation of soft exam afternoon questions --- data flow diagram design, soft exam Data Flow
Five main questions in the afternoon of the soft exam over the years are data flow diagram design, database design, uml diagram
The basis of software requirement analysis: the model analysis method.
The structured analysis method is applicable to the demand analysis of data processing software. It provides the following modeling tools: data flow diagram, data dictionary, machine learning English language, decision table, and decision tree.
The usage and method of DFD diagram are describ
Database Design-Data Flow Diagram (DFD) and data flow dfd1. Data Flow Diagram definition data flow diagram (DFD) is a tool used in structural analysis. It graphically depicts the proces
"Turn": http://blog.csdn.net/xianshengsun/article/details/7439537
"Reference": http://blog.csdn.net/cjr15233661143/article/details/8117555
The drawing of the flow chart
The data flow diagram is also called the flowchart Date flow diagram, DFD, is a convenient user to under
Concept ---- Data Flow Diagram (DFD)
Data Flow Diagram(Date flow divisor, DFD) is a tool used in the SA method to represent the system logic model. It graphically depicts the process of data flow and processing in the system, beca
In the test, the data flow chart is a big test site. Both small questions and big questions appear. How can we draw a data flow chart? Here, I sorted it out.
A Data Flow Chart consists of four basic symbols: data flow, processing (or processing), files, data source points, or endpoints. Frankly speaking, these four sym
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 d
Drawing the system DFD diagram is a very important part in the requirement analysis of building the system. Today, we will give a brief overview of the data flow graph section.
Composition:
A data flow chart is represented by four types of symbols. They are:Processing,Data Stream,Data storage files,Data SourceOrSettlement point.
Data
I have been working as a portal and have never had the opportunity to access the warehouse website, such as B2C. So I want to find an article about the order process. Today I just found one and marked it, look back
The soul of the B2C system is the order process. The following shows the two most important dynamic diagrams of the order, one of which is the order process activity diagram. There is also a simple order status chart. You can use these two
Bzoj 1001 the maximum flow of a rabbit captured by a wolf (dual diagram + Shortest Path), bzoj1001
Recommended article: Analysis of the application of the maximum and minimum theorem in the competition of informatics -- Zhou DongThe question is now the favorite "Pleasant goat and the Big Wolf" of the children. It is said that the big wolf cannot catch the sheep, but it is good to catch the rabbit, and the r
the grid point, and pay the additional oil depot fee C (excluding fuel ).(5) (1 )~ (4) The numbers N, K, A, B, and C are positive integers, and the constraint is 2 ≤ n ≤, 2 ≤ k ≤ 10. Design an algorithm to find the vehicle's route from the start point to the end point.
For a given traffic grid, calculate a vehicle's travel route from the start point to the end point with the least cost.Input
The first line of the file is the value of N, K, A, B, and C. Starting from the second row is a 0-1 mat
In the process of writing a document, drawing is indispensable. A graph contains many things and has the intuition that cannot be replaced by a language. The following is a summary of the various images O (worker _ worker) O ~ in the soft work documents under the worker ~. I. Settings: 1. The data flow chart (DFD, dataflowdi.pdf) is a relatively familiar figure.
In the process of writing a document, drawing is indispensable. A graph contains many thin
1. Double-click the PSD image to open a picture2, press and hold the C key to switch to zoom in or zoom out or click the magnifying glass to switch, method picture3. The icon to be cut zooms in to the middle position4, click the Select icon, then switch the mouse function, and then click on the mouse to cut the icon, so in the right side of the layer display area can see the point like is selected, click on the front of the small eyes, you can see the hidden icon, so you can confirm whether the
Transferred from: http://www.latelee.org/porting-uboot/u-boot-porting-bootstrap.htmlU-boot Transplant Essay: U-boot START process diagramIt also took some time to draw the picture above. Although very concise, but for the understanding of U-boot, from a higher point of view of the u-boot, it is very helpful. In fact, there are many online analysis tutorials, materials, I believe most are very similar. Therefore, the hermit is useless to write again.(Tips:How do I take the above image as already
J2SE Knowledge Points Induction Note (vii)---Java IO Part 2: Get keyboard input and IO Flow system diagram--Reprint Please specify Source: Coder-pigIntroduction to this section:Well, in the previous section we have introduced the use of file and Randomaccessfile classes, and this section we will talk about someCommonly used things, if you learn C + + or C's friends know, get keyboard input is very simple, s
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