6654 search results - page 240 / 1331 » Querying Faceted Databases |
170
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ICDT
2005
ACM
16 years 4 days ago
2005
ACM
The existence of a language expressing precisely the PTIME queries on arbitrary structures remains the central open problem in the theory of database query languages. As it turns o...
176
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ADC
2003
Springer
15 years 12 months ago
2003
Springer
Semistructured data, in particular XML, has emerged as one of the primary means for information exchange and content management. The power of XML allows authors to structure a doc...
152
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VLDB
1992
ACM
15 years 10 months ago
1992
ACM
New challenges to the database field brought about by the rapidly growing area of wireless personal communication are presented. Preliminary solutions to two of the major problems...
310
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ICDE
2007
IEEE
16 years 8 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
257
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VLDB
2009
ACM
16 years 6 months ago
2009
ACM
We consider the problem of using sampling to estimate the result of an aggregation operation over a subset-based SQL query, where a subquery is correlated to an outer query by a NO...