995 search results - page 98 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
216
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ICDE
2009
IEEE
16 years 4 months ago
2009
IEEE
Materializing results from complex aggregation queries helps to significantly improve response times in OLAP servers. This problem is known as the view selection problem: choosing ...
116
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AAAI
2008
15 years 5 months ago
2008
Changing preferences is very common in real life. The expressive power of the operations of preference change introduced so far in the literature is limited to adding new informat...
127
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BDA
2004
15 years 4 months ago
2004
For around 10 years, the academic research in database has attempted to define a commonly agreed logical modeling for the multidimensional and hierarchical nature of data manipulat...
140
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CORR
2000
Springer
15 years 2 months ago
2000
Springer
The multidimensional, heterogeneous, and temporal nature of speech databases raises interesting challenges for representation and query. Recently, annotation graphs have been prop...
127
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AMW
2009
15 years 25 days ago
2009
We address schema design in uncertain databases. Since uncertain data is relational in nature, decomposition becomes a key issue in design. Decomposition relies on dependency theo...