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» Managing the operator ordering problem in parallel databases
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EDBT
2008
ACM
144views Database» more  EDBT 2008»
14 years 7 months ago
BI batch manager: a system for managing batch workloads on enterprise data-warehouses
Modern enterprise data warehouses have complex workloads that are notoriously difficult to manage. An important problem in workload management is to run these complex workloads `o...
Abhay Mehta, Chetan Gupta, Umeshwar Dayal
VLDB
2005
ACM
121views Database» more  VLDB 2005»
14 years 7 months ago
Join operations in temporal databases
Joins are arguably the most important relational operators. Poor implementations are tantamount to computing the Cartesian product of the input relations. In a temporal database, t...
Dengfeng Gao, Christian S. Jensen, Richard T. Snod...
GIS
2006
ACM
14 years 8 months ago
Query optimizer for spatial join operations
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
Cirano Iochpe, João Luiz Dihl Comba, Miguel...
COCOA
2007
Springer
14 years 1 months ago
On Threshold BDDs and the Optimal Variable Ordering Problem
Abstract. Many combinatorial optimization problems can be formulated as 0/1 integer programs (0/1 IPs). The investigation of the structure of these problems raises the following ta...
Markus Behle
VLDB
2005
ACM
110views Database» more  VLDB 2005»
14 years 1 months ago
U-DBMS: A Database System for Managing Constantly-Evolving Data
In many systems, sensors are used to acquire information from external environments such as temperature, pressure and locations. Due to continuous changes in these values, and lim...
Reynold Cheng, Sarvjeet Singh, Sunil Prabhakar