Sciweavers

383 search results - page 1 / 77
» Join operations in temporal databases
Sort
View
180
Voted
VLDB
2005
ACM
121views Database» more  VLDB 2005»
16 years 17 days 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...
120
Voted
VLDB
1989
ACM
104views Database» more  VLDB 1989»
15 years 4 months ago
Event-Join Optimization in Temporal Relational Databases
An Event-Join combinestemporaljoin and outerjoin properties into a single operation. It is mostly used to group temporal attributes of an entity into a single relation. In this pa...
Arie Segev, Himawan Gunadhi
ICDE
2002
IEEE
126views Database» more  ICDE 2002»
16 years 1 months ago
Sequenced Subset Operators: Definition and Implementation
Difference, intersection, semi-join and anti-semi-join may be considered binary subset operators, in that they all return a subset of their left-hand argument. These operators are...
Joseph Dunn, Sean Davey, Anne Descour, Richard T. ...
95
Voted
EDBT
2004
ACM
162views Database» more  EDBT 2004»
16 years 14 days ago
Non-contiguous Sequence Pattern Queries
Abstract. Non-contiguous subsequence pattern queries search for symbol instances in a long sequence that satisfy some soft temporal constraints. In this paper, we propose a methodo...
Nikos Mamoulis, Man Lung Yiu
106
Voted
DAMON
2009
Springer
15 years 7 months ago
Cache-conscious buffering for database operators with state
Database processes must be cache-efficient to effectively utilize modern hardware. In this paper, we analyze the importance of temporal locality and the resultant cache behavior ...
John Cieslewicz, William Mee, Kenneth A. Ross