2859 search results - page 271 / 572 » Querying Complex Structured Databases |
273
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ICDE
1999
IEEE
16 years 8 months ago
1999
IEEE
Range sum queries on data cubes are a powerful tool for analysis. A range sum query applies an aggregation operation (e.g., SUM) over all selected cells in a data cube, where the ...
198
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ER
1998
Springer
15 years 10 months ago
1998
Springer
Data warehouses are complex systems that have to deliver highly-aggregated, high quality data from heterogeneous sources to decision makers. Due to the dynamic change in the requir...
194
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PODS
2004
ACM
16 years 6 months ago
2004
ACM
Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema. Given a source instance, there may be many solutions ? ta...
144
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ICDT
2005
ACM
16 years 2 days ago
2005
ACM
d abstract) Foto Afrati1 and Rada Chirkova2 1 Electrical and Computing Eng., National Technical University of Athens, 157 73 Athens, Greece 2 Computer Science Department, North Car...
309
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ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Abstract-- Workflow systems have become increasingly popular for managing experiments where many bioinformatics tasks are chained together. Due to the large amount of data generate...