1581 search results - page 232 / 317 » Date Warehouse Design |
234
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SIGMOD
2007
ACM
16 years 5 months ago
2007
ACM
Two trends are converging to make the CPU cost of a table scan a more important component of database performance. First, table scans are becoming a larger fraction of the query p...
172
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SIGMOD
2002
ACM
16 years 5 months ago
2002
ACM
The widespread distribution and availability of smallscale sensors, actuators, and embedded processors is transforming the physical world into a computing platform. One such examp...
171
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SSDBM
2008
IEEE
16 years 58 min ago
2008
IEEE
Random sampling is a popular technique for providing fast approximate query answers, especially in data warehouse environments. Compared to other types of synopses, random sampling...
179
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DILS
2005
Springer
15 years 11 months ago
2005
Springer
Abstract. We present INDUS (Intelligent Data Understanding System), a federated, query-centric system for knowledge acquisition from autonomous, distributed, semantically heterogen...
144
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DEXA
2004
Springer
15 years 11 months ago
2004
Springer
Data integration is the process that gives users access to multiple data sources though queries against a global schema. Semantic heterogeneity has been identified as the most imp...