7607 search results - page 48 / 1522 » Querying data provenance |
286
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ICDT
2009
ACM
16 years 7 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...
174
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DEXAW
2004
IEEE
15 years 10 months ago
2004
IEEE
Database-like query processing over a network of sensors has become an attractive paradigm for building sensor applications. A sensor query is characterized by data streams among ...
199
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CCGRID
2007
IEEE
16 years 18 days ago
2007
IEEE
Data Grids provide transparent access to heterogeneous and autonomous data resources. The main contribution of this paper is the presentation of a data sharing system that (i) is ...
164
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PODS
2006
ACM
16 years 6 months ago
2006
ACM
This is a survey of algorithms, complexity results, and general solution techniques for efficiently processing queries on tree-structured data. I focus on query languages that com...
154
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PVLDB
2010
15 years 4 months ago
2010
XMorph is a new, shape polymorphic, domain-specific XML query language. A query in a shape polymorphic language adapts to the shape of the input, freeing the user from having to k...