在C#中实现3层架构（Implementing the 3 tier architecture in C#）.docVIP

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在C#中实现3层架构（Implementing the 3 tier architecture in C#）.doc

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在C#中实现3层架构（Implementing the 3 tier architecture in C#）

在C#中实现3层架构（Implementing the 3 tier architecture in C#） Implementing the 3 tier architecture in.Txt, C# dont waste new tears for old sadness! You must be experienced in everything you do now, except for your wife. There are no 100 points for the other half, only 50 for two people. This article discusses how to implement the 3 tier architecture in C, storing data using the MS Access database. Here, I implement a small, reusable component that saves customer data in the 3 tier architecture. And provide the ability to add, update, and find customer data. This article discusses how to implement the 3 tier architecture in C, storing data using the MS Access database. Here, I implement a small, reusable component that saves customer data in the 3 tier architecture. And provide the ability to add, update, and find customer data. background First of all, I introduce some theoretical knowledge of the 3 tier architecture. Simple description: what is the 3 tier architecture? What are the advantages of the 3 tier architecture? What is the 3 tier architecture? The 3 tier architecture is a client server architecture in which user interfaces, business logic, data storage, and data access are designed as separate modules. There are 3 main layers, the first layer (the presentation layer, the GUI layer), the second layer (the business object, the business logic layer), and the third layer (data access layer). These layers can be developed individually and tested separately. Why do you divide the program code into 3 layers?. Separating the user interface layer, the business logic layer, and the data access layer has many advantages. To reuse business logic components in rapid development, we have implemented components that add, update, delete, and find customer data in the system. This component has been developed and tested, and we can use this component in other projects that want to save customer data. The system is easy to migrate, the business logic layer is separated from the da