XDB in Action: Decentralized Cross-Database Query Processing for Black-Box DBMSes
Haralampos Gavriilidis,
Leonhard Rose,
Joel Ziegler
et al.
Abstract:Data are naturally produced at different locations and hence stored on different DBMSes. To maximize the value of the collected data, today's users combine data from different sources. Research in data integration has proposed the Mediator-Wrapper (MW) architecture to enable ad-hoc querying processing over multiple sources. The MW approach is desirable for users, as they do not need to deal with heterogeneous data sources. However, from a query processing perspective, the MW approach is inefficient: First, one… Show more
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