1394 search results - page 56 / 279 » Executing Nested Queries |
125
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VLDB
2005
ACM
15 years 10 months ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
161
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WWW
2007
ACM
16 years 5 months ago
2007
ACM
Continuous queries are used to monitor changes to time varying data and to provide results useful for online decision making. Typically a user desires to obtain the value of some ...
134
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FUIN
2006
15 years 4 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
148
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PVLDB
2010
15 years 2 months ago
2010
A Business Process (BP for short) consists of a set of activities that achieve some business goal when combined in a flow. Among all the (maybe infinitely many) possible executi...
150
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ICDE
2006
IEEE
15 years 10 months ago
2006
IEEE
Currently, only few XML data management systems support concurrent access to an XML document, and if they do, they typically apply variations of hierarchical locking to handle XML...