First, data necessary to support the information access requirements of the project resides in multiple sources and must be integrated and provided as a single result to the consumer.
Data federation joins the information from multiple sources so that it can be surfaced as a service to the consumer.
数据联合将对来自多个源的信息进行联接,以便能作为服务向使用者提供。
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It is estimated that 900 million people worldwide can tap into Web-based informationsources and consumer sites, a rate expected to double in the next two years.