735 search results - page 27 / 147 » Query Optimization In Compressed Database Systems |
ICDE
2010
IEEE
14 years 2 months ago
2010
IEEE
— Finding the k nearest neighbors (kNN) of a query point, or a set of query points (kNN-Join) are fundamental problems in many application domains. Many previous efforts to solve...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
The window query model is widely used in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In this dissertation, ...
VLDB
1994
ACM
13 years 11 months ago
1994
ACM
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
Text documents often embed data that is structured in nature. This structured data is increasingly exposed using information extraction systems, which generate structured relation...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
In this paper we address the problem of minimizing the response time of a multi-way join query using pipelined (inter-operator) parallelism, in a parallel or a distributed environ...