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» Parallelizing query optimization
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DPD
1998
117views more  DPD 1998»
13 years 8 months ago
Solving Local Cost Estimation Problem for Global Query Optimization in Multidatabase Systems
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...
Qiang Zhu, Per-Åke Larson
DEXA
2005
Springer
80views Database» more  DEXA 2005»
14 years 2 months ago
Optimizing I/O Costs of Multi-dimensional Queries Using Bitmap Indices
Bitmap indices are efficient data structures for processing complex, multi-dimensional queries in data warehouse applications and scientific data analysis. For high-cardinality at...
Doron Rotem, Kurt Stockinger, Kesheng Wu
ICDE
2010
IEEE
192views Database» more  ICDE 2010»
14 years 3 months ago
XML reasoning made practical
— We present a tool for the static analysis of XPath queries and XML Schemas. The tool introduces techniques used in the field of verification (such as binary decision diagrams...
Pierre Genevès, Nabil Layaïda
ICDE
2006
IEEE
128views Database» more  ICDE 2006»
14 years 10 months ago
Partial Selection Query in Peer-to-Peer Databases
In this paper, we propose DBSampler, a query execution mechanism to answer "partial selection" queries in peerto-peer databases. A partial selection query is an arbitrar...
Farnoush Banaei Kashani, Cyrus Shahabi
ICDE
2007
IEEE
120views Database» more  ICDE 2007»
14 years 3 months ago
Support Concurrent Queries in Multiuser CBIR Systems
Various techniques have been developed for different query types in content-based image retrieval (CBIR) systems such as sampling queries, constrained sampling queries, multiple c...
Danzhou Liu, Kien A. Hua