6905 search results - page 979 / 1381 » Querying Multidimensional Databases |
129
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WWW
2005
ACM
16 years 5 months ago
2005
ACM
Constructing and maintaining semantic mappings are necessary but troublesome in data sharing systems. While most current work focuses on seeking automated techniques to solve this...
250
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VLDB
2003
ACM
16 years 5 months ago
2003
ACM
The efficient retrieval of data items on set-valued attributes is an important research topic that has attracted little attention so far. We studied and modified four index structu...
202
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VLDB
2007
ACM
16 years 5 months ago
2007
ACM
This demonstration showcases the STEP system for natural language access to relational databases. In STEP an administrator authors a highly structured semantic grammar through cou...
145
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ICDE
2009
IEEE
15 years 11 months ago
2009
IEEE
This demonstration presents Galaxy, a schema manager that facilitates easy and correct data sharing among autonomous but related, evolving data sources. Galaxy reduces heterogenei...
194
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EDBT
2010
ACM
15 years 11 months ago
2010
ACM
Compressed bitmap indexes are increasingly used for efficiently querying very large and complex databases. The Word Aligned Hybrid (WAH) bitmap compression scheme is commonly rec...