698 search results - page 86 / 140 » Auditing SQL Queries |
PVLDB
2008
14 years 9 months ago
2008
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...
107
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SSDBM
1999
IEEE
15 years 2 months ago
1999
IEEE
Large scale data analysis and mining activities, such as identifying interesting trends, making unusual patterns to stand out and verifying hypotheses, require sophisticated infor...
173
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
"Sparse" data, in which relations have many attributes that are null for most tuples, presents a challenge for relational database management systems. If one uses the no...
158
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
170
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SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
Clio, the IBM Research system for expressing declarative schema mappings, has progressed in the past few years from a research prototype into a technology that is behind some of I...