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249
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ICDT
2009
ACM
16 years 5 months ago
2009
ACM
The class of unions of conjunctive queries (UCQ) has been shown to be particularly well-behaved for data exchange; its certain answers can be computed in polynomial time (in terms...
172
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SAC
2008
ACM
15 years 3 months ago
2008
ACM
The dominance of digital objects in today's information landscape has changed the way humankind creates and exchanges information. However, it has also brought an entirely ne...
285
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ICDE
2009
IEEE
16 years 6 months ago
2009
IEEE
Abstract-- Inspired by the great success of information retrieval (IR) style keyword search on the web, keyword search on XML has emerged recently. The difference between text data...
