The framework we'll create is a simple 3-tier framework that processes business logic using three patterns: the 3-layer architecture pattern, the Singleton pattern, and the Command pattern.
我们将要建立的是一个简单的3-tier框架，它使用了三种模式处理业务逻辑：3-layer体系结构模式、Singleton模式和Command模式。
This software USES the present small and medium-sized software mainstream architecture that three layer architecture, the data layer, business logic layer, presentation layer, three layer.
本系统程序采用目前中小软件的主流架构即三层架构，分数据层，业务逻辑层，表示层三层。
The communication protocol is designed in term of three layers: Physical layer, Media Access Control layer and Logic Link Control layer.
本通信协议分为物理层、介质访问控制层和逻辑链路控制层三层设计。
In the three-layer architecture model information system is divided into: expression layer, business logic layer, DBMS layer.
三层结构体系是在分布式技术的基础上，把信息系统按功能划分为表示、功能及数据三部分。
In the three-layer architecture model information system is divided into: expression layer, business logic layer, DBMS layer.
三层结构体系是在分布式技术的基础上，把信息系统按功能划分为表示、功能及数据三部分。
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