Logical tiers divide the conceptual architecture into components that play specific roles within the application, such as presentation, application logic, business processes, and data access.
逻辑层将概念体系结构划分为在应用程序内扮演特定角色的组件，如表示层、应用程序逻辑层、业务流程层和数据访问层。
Spring framework is used to tie together the components in the Data Access Layer, the Business Logic Layer, and the Presentation Layer.
Spring框架用于将数据访问层、业务逻辑层和表示层中的各组件结合在一起。
Developers use this pattern to separate low-level data access operations from high-level business logic. A typical DAO implementation has the following components.
开发人员用这种模式将底层数据访问操作与高层业务逻辑分离开。
The data Access Layer utilizes WPF data binding to tie UI components to business logic or data components.
数据接口层(Data Access Layer)利用WPF实现UI组件对业务逻辑和数据组件的绑定。
The data Access Layer utilizes WPF data binding to tie UI components to business logic or data components.
数据接口层(Data Access Layer)利用WPF实现UI组件对业务逻辑和数据组件的绑定。
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