492 search results - page 88 / 99 » Computing aggregations in database query languages |
SAC
2003
ACM
15 years 2 months ago
2003
ACM
Existing sequence comparison software applications lack automation, abstraction, performance, and flexibility. Users need a new way of studying and applying sequence comparisons i...
113
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PODS
1994
ACM
15 years 1 months ago
1994
ACM
Traditionally, computational complexity has considered only static problems. Classical Complexity Classes such as NC, P, and NP are de ned in terms of the complexity of checking {...
123
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POST
2012
13 years 5 months ago
2012
Provenance is an increasing concern due to the revolution in sharing and processing scientific data on the Web and in other computer systems. It is proposed that many computer sys...
PODS
2008
ACM
15 years 9 months ago
2008
ACM
We revisit the classical chase procedure, studying its properties as well as its applicability to standard database problems. We settle (in the negative) the open problem of decid...
ICDE
2010
IEEE
15 years 4 months ago
2010
IEEE
— Massive data analysis on large clusters presents new opportunities and challenges for query optimization. Data partitioning is crucial to performance in this environment. Howev...