651 search results - page 95 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
SIGMOD
2005
ACM
14 years 9 months ago
2005
ACM
While traditional database systems optimize for performance on one-shot queries, emerging large-scale monitoring applications require continuous tracking of complex aggregates and...
PODS
2002
ACM
14 years 9 months ago
2002
ACM
Data Warehousing and OLAPapplications typically view data as having multiple logical dimensions e.g., product, location with natural hierarchies de ned on each dimension. OLAP que...
DASFAA
2008
IEEE
14 years 3 months ago
2008
IEEE
The DWS (Data Warehouse Striping) technique is a round-robin data partitioning approach especially designed for distributed data warehousing environments. In DWS the fact tables ar...
IPPS
2007
IEEE
14 years 3 months ago
2007
IEEE
1 The unstructured Peer-to-Peer (P2P) systems usually use a “blind search” method to find the requested data object by propagating a query to a number of peers randomly. In or...
WAIM
2004
Springer
14 years 2 months ago
2004
Springer
Selectivity estimation of path expressions in querying XML data plays an important role in query optimization. A path expression may contain multiple branches with predicates, each...