1394 search results - page 88 / 279 » Executing Nested Queries |
136
Voted
KBSE
2008
IEEE
15 years 10 months ago
2008
IEEE
We present a novel approach for black-box testing of database management systems (DBMS) using the Alloy tool-set. Given a database schema and an SQL query as inputs, our approach ...
142
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VLDB
2005
ACM
15 years 9 months ago
2005
ACM
We present DITN, a new method of parallel querying based on dynamic outsourcing of join processing tasks to non-dedicated, heterogeneous computers. In DITN, partitioning is not th...
147
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PVLDB
2010
15 years 2 months ago
2010
Optimization of join queries based on average selectivities is suboptimal in highly correlated databases. In such databases, relations are naturally divided into partitions, each ...
230
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SIGMOD
2006
ACM
16 years 4 months ago
2006
ACM
This paper presents a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries, which provide the k groups with the highest aggregates as results....
234
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SIGMOD
2005
ACM
16 years 4 months ago
2005
ACM
Although integrity constraints have long been used to maintain data consistency, there are situations in which they may not be enforced or satisfied. In this paper, we present Con...