1300 search results - page 151 / 260 » XML Query Processing and Optimization |
177
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
We consider the problem of optimizing and executing multiple continuous queries, where each query is a conjunction of filters and each filter may occur in multiple queries. When f...
209
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PPDP
2010
Springer
15 years 4 months ago
2010
Springer
This paperdescribes the use of a powerful graph query language for querying programs, and a novel combination of transformations for generating efficient implementations of the q...
175
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VLDB
1987
ACM
15 years 9 months ago
1987
ACM
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...
172
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EDBT
2011
ACM
14 years 9 months ago
2011
ACM
Continuous top-k queries, which report a certain number (k) of top preferred objects from data streams, are important for a broad class of real-time applications, ranging from fi...
256
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SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
In order to enable extensibility, modern query optimizers typically leverage a transformation rule based framework. Testing individual rule correctness as well as correctness of r...