转换层将应用一个推理过程(类似于前推链接法)，并检查规划树中的每个节点，看哪些查询转换适用于该节点。
The transformation layer will apply an inference process (similar to forward-chaining) and check for each node in the plan tree to see which query transformations apply to that node.
与前一个模式类似，代理esb模式适合具有多个区域或部门的业务。
Like the previous pattern, the Brokered ESB pattern fits businesses with multiple geographies or divisions.
出站请求：与前一个条目类似；内部用户怎样访问受控环境中的外部服务？
Outbound Requests: Similar to the previous entry; how can internal users get access to outside services in a controlled environment?
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