tc

说明：   本系统采用C/S三层架构，采用Sql Server 2005为数据库，主要开发语言为C#。 三层架构：所谓的三层架构即将整个业务应用划分为：表现层、业务逻辑层、数据访问层。采用三层架构的目的是为了使整个系统的逻辑结构清晰明了，在逻辑上保持相对独立性，从而能提高系统和软件的可扩展性和可维护性。 （1）表示层：为用户提供交互性操作界面，用户通过表示层发送请求。 （2）业务逻辑层：负责处理关键业务逻辑和数据传递。 （3）数据访问层：该层主要是对数据库的访问，针对数据的维护。
(The system uses C/S three-tier architecture, using Sql Server 2005 for the , the main development language for the C#. Three-tier architecture: the so-called three-tier architecture is about the entire business applications are divided into: the presentation layer, business logic layer, data access layer. The purpose of the three-tier architecture is to make the logical structure of the entire system clear, logically maintain the relative independence, which can improve the system and software scalability and maintainability.         (1) that layer: to provide users with interactive interface, the user sends a request through the presentation layer.         (2) business logic layer: responsible for handling critical business logic and data transfer.         (3) data access layer: This layer is mainly on the access, for data maintenance.)