78 search results - page 11 / 16 » Progressive Query Optimization for Federated Queries |
STOC
2000
ACM
15 years 2 months ago
2000
ACM
We consider a new model for computing with uncertainty. It is desired to compute a function f X1; : : : ; Xn where X1; : : : ; Xn are unknown, but guaranteed to lie in speci ed i...
VLDB
1998
ACM
15 years 1 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...
62
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PVLDB
2010
14 years 8 months ago
2010
The huge amount of temporal data generated from many important applications call for a highly efficient and scalable version index. The TSB-tree has the potential of large scalab...
159
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SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
In this paper, we study the evaluation of skyline queries with partially-ordered attributes. Because such attributes lack a total ordering, traditional index-based evaluation algo...
ICDT
2005
ACM
15 years 3 months ago
2005
ACM
We present a formal analysis of the database layout problem, i.e., the problem of determining how database objects such as tables and indexes are assigned to disk drives. Optimizin...