其中包含元素序列，包括服务上允许的每个查询参数，即作者、标题、出版商、主题和语言。
It contains a sequence of elements, including each of the query parameters you allow on the service, namely author, title, publisher, subject, and language.
在这种情况下，中介向注册中心进行查询，并希望注册中心为它提供包括满足查询要求的提供者端点地址的服务元数据。
In this situation, the mediation queries the registry and expects the registry to give it service metadata containing the endpoint address of the provider matching the query.
XAware提供了设计、构建和实现数据服务的功能，同时还提供了其他一些特性增强，包括新的大纲视图、改进的搜索功能及运行期的查询控制。
XAware provides the ability to design, build and implement the data services with other feature enhancements that include a new outline view, improved search functionality and run-time query control.
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