尽管数据类型在Web服务开发中可以部分地解决数据源的选择问题，但对于服务请求者WSDL仍旧不是一个好的解决方案。
Although the data type in Web service development can partially resolve the problem to give out the options of data sources, WSDL itself is still a problematic guidance to the service requesters.
这对于记账用途来说特别重要，从而可以避免对服务请求者的错误收费。
This is especially important for billing purposes, in order to prevent inaccurate charges to the service requestor.
可能有很多服务的提供者，并且他们中的每一个可能对于服务有一个不同的名称，或者另外一些非标准要求是服务请求者所必须遵守的。
There may be many providers for the service, and each of them may have a different name for the service or some other non-standard requirements that the service requester must abide by.
应用推荐