136 search results - page 23 / 28 » Query optimizer for spatial join operations |
DMDW
2000
13 years 9 months ago
2000
View materialization is a central issue in logical design of data warehouses since it is one of the most powerful techniques to improve the response to the workload. Most approach...
SIGMOD
1999
ACM
14 years 4 days ago
1999
ACM
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three re...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Sequence-based XML indexing aims at avoiding expensive join operations in query processing. It transforms structured XML data into sequences so that a structured query can be answ...
SIGMOD
2002
ACM
14 years 8 months ago
2002
ACM
Spatial indexing has been one of the active focus areas in recent database research. Several variants of Quadtree and R-tree indexes have been proposed in database literature. In ...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...