Business Logic Tier 业务逻辑层 ; 商业逻辑层
Presentation logic tier 表现逻辑层 ; 表示逻辑层
Operation logic tier 业务逻辑层
Middle business logic tier 中间业务逻辑层
Events-ejb: business logic tier, ejb session bean.
events - ejb：业务逻辑层、ejb会话bean。
The business logic tier enforces the rules of the business, such as calculations and workflow, that drive the application.
业务逻辑层实施业务规则(比如计算和工作流)，从而驱动应用程序。
An EJB endpoint is a good choice because it keeps business logic located in the same tier with the endpoint.
ejb端点是一种很好的选择，因为它使业务逻辑和端点位于同一层上。
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