4137 search results - page 728 / 828 » Managing Expressions as Data in Relational Database Systems |
143
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CIKM
2006
Springer
15 years 10 months ago
2006
Springer
This paper revisits the analysis of annotation propagation from source databases to views defined in terms of conjunctive (SPJ) queries. Given a source database D, an SPJ query Q,...
200
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ADL
2000
Springer
15 years 10 months ago
2000
Springer
In the BlueView project, digital library services are developed and partially implemented based on the architecture of virtual document servers. Using standard tools like fulltext...
159
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EDBT
2008
ACM
16 years 6 months ago
2008
ACM
Schema mapping algorithms rely on value correspondences ? i.e., correspondences among semantically related attributes ? to produce complex transformations among data sources. Thes...
152
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ICDE
2010
IEEE
16 years 1 months ago
2010
IEEE
Abstract— In parallel query-processing environments, accurate, time-oriented progress indicators could provide much utility given that inter- and intra-query execution times can ...
175
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DEBU
2000
15 years 6 months ago
2000
In a traditional information retrieval system, it is assumed that queries can be posed about any topic. In reality, a large fraction of web queries are posed about a relatively sm...