中国最大的综合性文献数据库 -维普资讯 关键词: 超文本 搜索引擎 因特网 信息检索模式[gap=873]Key words: hypertext; searching engine; intemet; information retrieval mode
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名称空间做了很多工作来确保XML符合预期的模式，但也增加了信息检索的复杂性。
Namespaces do a lot to ensure that the XML conforms to an expected schema but add complexity for retrieval of information.
存储、检索和管理信息所需的全部都可以用XML表示，查询可以用XPath或XQuery模式表示。
All that is required to store, retrieve, and manage information is that it be expressed in XML, and that queries be expressed as XPath or XQuery patterns.
该模式允许客户端从一组信息源检索信息，而无需了解(至少在较高的抽象级别上)多个源的存在。
The pattern allows a client to retrieve information from a group of information sources without the need to understand, at least at a high level, that multiple sources exist.
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