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110
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VLDB
2004
ACM
15 years 5 months ago
2004
ACM
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...
116
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CORR
2004
Springer
14 years 11 months ago
2004
Springer
Data structures often use an integer variable to keep track of the number of elements they store. An invariant of such data structure is that the value of the integer variable is ...
126
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ICDE
2012
IEEE
13 years 2 months ago
2012
IEEE
— Uncertainties in data arise for a number of reasons: when the data set is incomplete, contains conflicting information or has been deliberately perturbed or coarsened to remov...
107
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TIME
1994
IEEE
15 years 3 months ago
1994
IEEE
We formulate an algebra of binary temporal relations between events the number of occurrences of which is unknown, but which are known to recur in time. Ontologically, we view the...
110
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SIGMOD
2011
ACM
14 years 2 months ago
2011
ACM
We study the problem of generating synthetic databases having declaratively specified characteristics. This problem is motivated by database system and application testing, data ...