Sciweavers

3368 search results - page 313 / 674
» The Complexity of Query Reliability
Sort
View
FQAS
2006
Springer
76views Database» more  FQAS 2006»
15 years 10 months ago
Why Using Structural Hints in XML Retrieval?
Abstract. When querying XML collections, users cannot always express their need in a precise way. Systems should therefore support vagueness at both the content and structural leve...
Karen Sauvagnat, Mohand Boughanem, Claude Chrismen...
VLDB
2000
ACM
248views Database» more  VLDB 2000»
15 years 10 months ago
Multi-Dimensional Database Allocation for Parallel Data Warehouses
Data allocation is a key performance factor for parallel database systems (PDBS). This holds especially for data warehousing environments where huge amounts of data and complex an...
Thomas Stöhr, Holger Märtens, Erhard Rah...
VLDB
1995
ACM
129views Database» more  VLDB 1995»
15 years 10 months ago
A Cost Model for Clustered Object-Oriented Databases
Query processing is one of the most, critical issues in Object-Oriented DBMSs. Extensible opt,imizers with efficient, search strategies require a cost model to select the most eff...
Georges Gardarin, Jean-Robert Gruser, Zhao-Hui Tan...
VLDB
1995
ACM
214views Database» more  VLDB 1995»
15 years 10 months ago
Dynamic Multi-Resource Load Balancing in Parallel Database Systems
Parallel database systems have to support the effective parallelization of complex queries in multi-user mode, i.e. in combination with inter-query/inter-transaction parallelism. ...
Erhard Rahm, Robert Marek
COCO
2008
Springer
86views Algorithms» more  COCO 2008»
15 years 8 months ago
The Multiplicative Quantum Adversary
We present a new variant of the quantum adversary method. All adversary methods give lower bounds on the quantum query complexity of a function by bounding the change of a progres...
Robert Spalek