649 search results - page 18 / 130 » Improved and Optimized Partitioning Techniques in Database Q... |
111
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SIGMOD
2001
ACM
16 years 2 months ago
2001
ACM
Over the last decades, improvements in CPU speed have outpaced improvements in main memory and disk access rates by orders of magnitude, enabling the use of data compression techn...
209
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VLDB
2006
ACM
16 years 2 months ago
2006
ACM
While the information published in the form of XML-compliant documents keeps fast mounting up, efficient and effective query processing and optimization for XML have now become mor...
120
Voted
DAWAK
2006
Springer
15 years 5 months ago
2006
Springer
We consider the problem of concurrent execution of multiple frequent itemset queries. If such data mining queries operate on overlapping parts of the database, then their overall I...
DASFAA
2004
IEEE
15 years 5 months ago
2004
IEEE
Iceberg queries are a special case of SQL queries involving GROUP BY and HAVING clauses, wherein the answer set is small relative to the database size. We present here a performanc...
203
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SIGMOD
2007
ACM
16 years 2 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...