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311
Voted
SIGMOD
2009
ACM
16 years 7 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...
312
Voted
SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
Research has investigated mappings among data sources under two perspectives. On one side, there are studies of practical tools for schema mapping generation; these focus on algor...
320
Voted
SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
Nearest neighbor (NN) search in high dimensional space is an important problem in many applications. Ideally, a practical solution (i) should be implementable in a relational data...
301
click to vote
SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
The skyline of a d-dimensional dataset consists of all points not dominated by others. The incorporation of the skyline operator into practical database systems necessitates an ef...
308
Voted
SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
Column-oriented database systems [19, 23] perform better than traditional row-oriented database systems on analytical workloads such as those found in decision support and busines...