For example, suppose a simple abstract entity model (part of the traditional analysis model) was developed in UML by a set of analysts.

例如，假设一组分析员用uml开发了一个简单的抽象实体模型(传统分析模型的一部分)。

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This scenario is familiar to most engineers: a system model has a given core entity structure with a given set of events that form a lifecycle.

这个场景对很多工程师都不陌生：一个系统模型包含一个核心实体结构，该实体具有一组事件，这些事件组成了实体的生命周期。

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A session Facade pattern generates a session bean class to serve as the front end of a set of entity bean classes that model business information.

session Facade模式产生一个session bean类作为针对业务信息建模的bean类实体前端。

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