AccountTransaction充当了一个供web应用程序或客户端访问实体e JB组件的会话虚包，因此它支持远程接口。

AccountTransaction ACTS as a session facade for Web applications or clients to access entity EJB components, and thus supports the remote interface.

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图10显示了应用请求端缓存模式前的Catalog实体设计模型。

Figure 10 shows the catalog entity design model before applying the requester-side caching pattern.

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与会话Bean和实体Bean不同，消息驱动的Bean不会由其他Bean或客户端应用程序调用。

Unlike session and entity beans, message-driven beans are not invoked by other beans or client applications.

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