1238 search results - page 55 / 248 » View-based query containment |
IPM
2000
14 years 9 months ago
2000
We analyzed transaction logs containing 51,473 queries posed by 18,113 users of Excite, a major Internet search service. We provide data on: (i) sessions - changes in queries durin...
164
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VLDB
2007
ACM
15 years 10 months ago
2007
ACM
The performance of XML database queries can be greatly enhanced by rewriting them using materialized views. We study the problem of rewriting a query using materialized views, whe...
144
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SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
Data analysts need to understand the quality of data in the warehouse. This is often done by issuing many Group By queries on the sets of columns of interest. Since the volume of ...
VLDB
2005
ACM
15 years 3 months ago
2005
ACM
With the increasing occurrence of temporal and spatial data in present-day database applications, the interval data type is adopted by more and more database systems. For an effic...
BPM
2008
Springer
14 years 11 months ago
2008
Springer
Business processes can be very large and may contain several different concerns, scattered across the process and tangled with other concerns. Crosscutting concerns are difficult t...