如果我们用实体bean来实现这个付款用例，则一个简单的事务需要跨网络进行四个调用，如图5所示。

If we used entity beans to implement the Make Payment use case, a simple transaction might require four calls across the network, as shown in Figure 5.

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根据提交的付款类型，此流程将调用相应的信用卡公司来处理付款。

Based on the type of payment submitted, the process invokes the corresponding credit card company to process the payment.

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函数据调用将使流程代理程序执行一个流程，将内容服务上的资产操作和在付款服务上的金融交易组合起来。

The function call would result in the process Broker executing a process that grouped an asset manipulation on the content service with a financial transaction on the payment service.

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