application layer in osi model

These concepts are not specific to a particular programming language.View layer: Combines the control layer to display the foreground page.Control layer: The Business module process controls, invoking the service layer interface.Service layer: A business Operation implementa

conversion when the scheduler has requirements and participates in data transmission in the process. The memory model also helps to create processes as executable ing instances loaded by the file server and also facilitates data transmission in the process. If you are interested in more memory models, see Chapter 7 memory models. 1.3.2.4 personality Layer We designed the microkernel to provide enough funct

This articleArticleWe have built a movie database for management.ProgramHere we create a Movie Database Management Program in an extremely fast and simple way, and operate the database directly at the control layer.Next we will learn how to use the reporsitory mode. Using the repository mode requires additional effort, but it can make our program easier to test and better respond to changes. I. What is model class?The MVC

Some friends talked about the difference between Layer 3 and MVC. Some people have thrown out this problem before. I will also raise this question to my friends who come to the company for interviews. Let me also talk about my understanding of the two. First of all, there is a problem with this question. What is the difference between "XX structure" and "XX mode? What is the difference between Chinese social systems and American lifestyles? The

true. As follows: id="baseService"　 abstract="true"> 　 　 And because these service beans are single cases, efficiency should not be affected. 4. Summary Compared to the 5 classes in Appfuse, my model layer only VO as a pure data carrier, manager class put business methods. Some people say this is too easy, but an application, to be divided into a few JS

Objective This blog is a general summary of the three-layer model, specifically about what is a three-storey structure, why there are three-layer structure, three-layer structure of the three layers, three-layer structure of the

It is very useful to know some basic router functions. Here we mainly analyze the practical application of the network layer in the basic router functions. Traditionally, a router operates on Layer 3 of the OSI Layer 7 Protocol. Its main task is to receive data packets from

a recordset from the server to the client in three ways. The three methods are as follows:(1) Use the RDS. datacontrol method and attributes that automatically call the rdsserver. DataFactory object.(2) manually call the rdsserver. DataFactory object.(3) create a custom ActiveX DLL for data access.Here, our client uses a custom intermediate layer object (DCOM/COM +) to process business logic and access data.First, let's look at the basic RDS programm

written as a four-segment decimal number, for example: 172.16.10.13) The IP protocol has two main functions, one is to assign an IP address to each computer, and the other is to determine which addresses are in the same sub-network (with subnet masks).4) Encapsulated data format　　　　　　　　(4) Transport Layer function: Defines the protocol port number of the transmitted data, as well as the flow control and error checking.1) The protocol is: TCP UDP, the

In the last rush of time, I wrote a practical application mode for EF in the previous project. Because it was too long, I failed to discuss too much, so I continued to expand. What I want to discuss this time is,Entity. If it is a business model similar to a domain model, can its data come from different data sources?. This idea comes first from the

composed of Fishigui and upper-level applications, then the entire system can be divided into two main layers, the application layer and the framework layer. The framework layer has the Fishigui Project group development, the application