712 search results - page 89 / 143 » Decoupled Query Optimization for Federated Database Systems |
116
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SSDBM
2005
IEEE
15 years 8 months ago
2005
IEEE
This paper introduces a framework for Phenomena Detection and Tracking (PDT, for short) in sensor network databases. Examples of detectable phenomena include the propagation over ...
109
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SAC
2009
ACM
15 years 9 months ago
2009
ACM
Today user-centered information acquisition over collections of complex XML documents is increasingly in demand. To this end, preferences have become an important paradigm enablin...
135
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MIDDLEWARE
2005
Springer
15 years 8 months ago
2005
Springer
These last years, the evolution of nomadic terminals and mobile networks has yield to the development of the ubiquitous computing. In this context, actual query evaluation and opt...
213
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ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
In Online Analytic Processing (OLAP) deployments, different users, lines of businesses and business units often create adhoc aggregation hierarchies tailor-made for specific report...
209
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SIGMOD
2009
ACM
16 years 3 months ago
2009
ACM
SQL tuning--the attempt to improve a poorly-performing execution plan produced by the database query optimizer-is a critical aspect of database performance tuning. Ironically, as ...