不过，复杂转换对联合模式的性能有负面影响，从而会降低此模式对此类场景的适用性。
However, complex transformations have a negative impact on the performance of the federation pattern and make this pattern less applicable for those scenarios.
需要复杂转换来构建集成视图的场景将对响应时间造成负面影响，尤其是采用这种方法时。
Integration scenarios that require complex transformations to build the integrated view will have a negative impact on the response time particularly in this approach.
类似地，使用xml之类的标准格式对数据交换非常有益，但是如果应用程序执行重复的或过量的转换，那么这样做将对性能造成负面影响。
Similarly, using standard formats such as XML is a great idea for data interchange but can have a negative impact on performance if your application performs repeated or extraneous transformations.
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