Data Integration and Data Exchange
From Google TechTalks · 1:00:14
Show by Google TechTalks
Google TechTalksMarch 24, 2006Alan NashABSTRACTI will discuss two fundamental problems in information integration:(1) how to answer a query over a public interface which combines data from several sources and (2) how to create a single database conforming to the public interface which combines data from several sources.Uploaded 08-10-07I consider the case where the sources are relational databases, where the public interface is a public schema (a specification of the format of a database), and where the sources are related to the public schema by a mapping that is specified by constraints.
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