995 search results - page 59 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
141
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SIGMOD
2011
ACM
14 years 4 months ago
2011
ACM
An important means of allowing non-expert end-users to pose ad hoc queries — whether over single databases or data integration systems — is through keyword search. Given a set...
121
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EDBT
2006
ACM
16 years 2 months ago
2006
ACM
Scientific data in the life sciences is distributed over various independent multi-format databases and is constantly expanding. We discuss a scenario where a life science research...
131
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SIGMOD
2000
ACM
15 years 6 months ago
2000
ACM
Testing an SQL database system by running large sets of deterministic or stochastic SQL statements is common practice in commercial database development. However, code defects oft...
116
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VLDB
2002
ACM
15 years 1 months ago
2002
ACM
We present a novel framework for mapping between any combination of XML and relational schemas, in which a high-level, userspecified mapping is translated into semantically meanin...
114
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PEPM
2010
ACM
15 years 10 months ago
2010
ACM
We show how to efficiently evaluate generic map-filter-product queries, generalizations of select-project-join (SPJ) queries in relational algebra, based on a combination of two...