549 search results - page 52 / 110 » Data Expiration and Aggregate Queries |
DAWAK
2007
Springer
15 years 6 months ago
2007
Springer
Abstract. A federated data warehouse is a logical integration of data warehouses applicable when physical integration is impossible due to privacy policy or legal restrictions. In ...
EDBT
2000
ACM
15 years 3 months ago
2000
ACM
OLAP applications use precomputation of aggregate data to improve query response time. While this problem has been well-studied in the recent database literature, to our knowledge ...
CIKM
2009
Springer
15 years 3 months ago
2009
Springer
Traditional routing indices in peer-to-peer (P2P) networks are mainly designed for document retrieval applications and maintain aggregated one-dimensional values representing the ...
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SIGMOD
1996
ACM
15 years 4 months ago
1996
ACM
Decision support applications involve complex queries on very large databases. Since response times should be small, query optimization is critical. Users typically view the data ...
DAWAK
2010
Springer
15 years 28 days ago
2010
Springer
Spatial data warehouses (SDW) enable analytical multidimensional queries together with spatial analysis. Mainly, three operations are related to SDW query processing performance: (...