net分层结构(.net分层结构)(Net hierarchical structure (.Net hierarchical structure)).doc

net分层结构(.net分层结构)(Net hierarchical structure (.Net hierarchical structure)).doc

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net分层结构(.net分层结构)(Net hierarchical structure (.Net hierarchical structure))

net分层结构(.net分层结构)(Net hierarchical structure (.Net hierarchical structure)) Layered architecture When the system architecture is composed of time different data elements, the structure of the system is a large-scale hierarchical system, each level will take a very important function, but not as much as possible with the other level. This is the definition of hierarchical systems, [11]. 2.2.1 logic and Phy Logical and physical layers can be placed at the same level. Some layers are defined as only logical layers, but now you can put logical and physical layers together and be widely used by client / server mode programming patterns. Here, the meaning of the physical layer is somewhat different from the meaning of the physical layer of some other programs, which can be stored in the hardware of different parts of a system, such as client / server. In this case, you can operate on the client side, for example, but store the data and business processes in the server, which is called a double data structure. In this case, you exchange data in different layers using different communication protocols. This layering is shown in figure 1. A logical layer is conceptually defined as a hierarchy of user actions and data flows. In this way, the user interface can be stripped from the background operation process, enabling two different technologies to implement the user interface and the business data stream. Therefore, the two parts of knowledge are logically different, but they carry out two different tasks. For example, a lot of software running on our side, but also in many other places are running this software, this is a hierarchical system to distinguish between user and database of the best examples of process. The definition of the vertical hierarchy of 2.2.2 A system will be divided into vertical structure means that the system determines the film layer or each other each other, the higher layers can give the following more to provide more services and call the bottom

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