您还应该了解现有的各种企业组件，如安全机制、业务流程和业务规则引擎、工作流引擎和打包的应用程序。
You should also be aware of existing enterprise components, such as security mechanisms, business process and business rules engines, workflow engines, and packaged applications.
规则架构师必须定义接口来与现有的外部和遗留应用程序交互。
The rules architect must define interfaces to interact with existing external and legacy applications.
分析师称，EAI软件提供了答案，使现有的和新的应用程序通过在业务流程规则的指挥下的消息来交换数据。
EAI software provides an answer, analysts say, by causing existing and new applications to exchange data via messages governed by the rules of the business process.
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