649 search results - page 69 / 130 » Improved and Optimized Partitioning Techniques in Database Q... |
120
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TIME
1997
IEEE
15 years 8 months ago
1997
IEEE
Temporal databases provide built-in supports for efficient recording and querying of time-evolving data. In this paper, data clustering issues in temporal database environment are...
129
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DOLAP
2009
ACM
15 years 10 months ago
2009
ACM
In this paper, we investigate the problem of answering top-k queries via materialized views. We provide theoretical guarantees for the adequacy of a view to answer a top-k query, ...
186
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ICDE
2009
IEEE
15 years 1 months ago
2009
IEEE
There is much effort to develop comprehensive support for the storage and querying of XML data in database management systems. The major developers have extended their systems to h...
121
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EDBT
2004
ACM
16 years 3 months ago
2004
ACM
Abstract. Non-contiguous subsequence pattern queries search for symbol instances in a long sequence that satisfy some soft temporal constraints. In this paper, we propose a methodo...
136
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DAWAK
1999
Springer
15 years 8 months ago
1999
Springer
Efficient query processing is one of the basic needs for data mining algorithms. Clustering algorithms, association rule mining algorithms and OLAP tools all rely on efficient quer...