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130
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VLDB
2005
ACM
15 years 8 months ago
2005
ACM
A “plan diagram” is a pictorial enumeration of the execution plan choices of a database query optimizer over the relational selectivity space. In this paper, we present and an...
217
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SIGMOD
2009
ACM
16 years 3 months ago
2009
ACM
Conditional functional dependencies (CFDs) have recently been proposed as extensions of classical functional dependencies that apply to a certain subset of the relation, as specif...
ER
2003
Springer
15 years 8 months ago
2003
Springer
125
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ICDE
1993
IEEE
15 years 7 months ago
1993
IEEE
117
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RTDB
1996
15 years 4 months ago
1996
We are developing an object-oriented real-time database system that includes a relationally complete query language. Unlike conventional query optimizers, our optimizer estimates ...