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。
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.
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。
Spring framework is used to tie together the components in the Data Access Layer, the Business Logic Layer, and the Presentation Layer.
您应该公开组件的属性而不是公共字段，因为属性的版本可以控制，它们允许数据隐藏，并且访问器方法可以执行附加逻辑。
You should expose properties instead of public fields from your components, because properties can be versioned, they allow data hiding, and the accessor methods can execute additional logic.
完成所分配模块和组件的设计，编码实现和单元测试，包括用户界面，功能逻辑，数据库访问和各种应用集成。
Design, implement and unit test the assigned components, modules and projects, including the necessary user interface, business functionality, database access and application integration.
按照J2EE体系结构要求，以建立相应EJ b组件实现数据库访问逻辑和业务逻辑。
According to the requirement of J2EE system structure, corresponding EJB component was established to access database and handle operation logic.
按照J2EE体系结构要求，以建立相应EJ b组件实现数据库访问逻辑和业务逻辑。
According to the requirement of J2EE system structure, corresponding EJB component was established to access database and handle operation logic.
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