2724 search results - page 171 / 545 » Optimizing Queries on Files |
153
Voted
DPD
2002
15 years 3 months ago
2002
A major cost in executing queries in a distributed database system is the data transfer cost incurred in transferring relations (fragments) accessed by a query from different sites...
203
Voted
ICDE
2007
IEEE
16 years 4 months ago
2007
IEEE
We present a system that optimizes sequences of related client requests by combining small requests into larger ones, thus reducing per-request overhead. The system predicts upcom...
167
Voted
ICDE
2012
IEEE
13 years 6 months ago
2012
IEEE
— Accurate query performance prediction (QPP) is central to effective resource management, query optimization and query scheduling. Analytical cost models, used in current genera...
123
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VLDB
1991
ACM
15 years 7 months ago
1991
ACM
We explore the implications of supporting bags (i.e. multisets) in a data model and associated query language, and present some formal results concerned with the algebraic propert...
107
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WOLLIC
2009
Springer
15 years 10 months ago
2009
Springer
In the recent years, query answering over Description Logic (DL) knowledge bases has been receiving increasing attention, and various methods and techniques have been presented for...