315 search results - page 42 / 63 » An Overview of Query Optimization in Relational Systems |
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
We study the problem of computing query results with confidence values in ULDBs: relational databases with uncertainty and lineage. ULDBs, which subsume probabilistic databases, o...
EDBT
2011
ACM
12 years 11 months ago
2011
ACM
The popularity of batch-oriented cluster architectures like Hadoop is on the rise. These batch-based systems successfully achieve high degrees of scalability by carefully allocati...
VLDB
2007
ACM
14 years 1 months ago
2007
ACM
Real-world datasets exhibit a complex dependency structure among the data attributes. Learning this structure is a key task in automatic statistics configuration for query optimi...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
In this paper, we present the design, implementation, and evaluation of a system that executes complex event queries over real-time streams of RFID readings encoded as events. The...
CIKM
2003
Springer
14 years 23 days ago
2003
Springer
There have been several techniques proposed for building statistics for static XML data. However, very little work has been done in the area of building XML statistics for data so...