649 search results - page 5 / 130 » Improved and Optimized Partitioning Techniques in Database Q... |
SIGMOD
2004
ACM
15 years 9 months ago
2004
ACM
An effective query optimizer finds a query plan that exploits the characteristics of the source data. In data integration, little is known in advance about sources' propertie...
EDBT
2010
ACM
15 years 4 months ago
2010
ACM
A recurring manual task in data integration, ontology alignment or model management is finding mappings between complex meta data structures. In order to reduce the manual effor...
165
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ICDE
2003
IEEE
15 years 11 months ago
2003
IEEE
The long-running nature of continuous queries poses new scalability challenges for dataflow processing. CQ systems execute pipelined dataflows that may be shared across multiple q...
EUROPAR
2004
Springer
15 years 2 months ago
2004
Springer
OLAP queries are typically heavy-weight and ad-hoc thus requiring high storage capacity and processing power. In this paper, we address this problem using a database cluster which...
158
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ICDE
2007
IEEE
15 years 11 months ago
2007
IEEE
There has been a great deal of work in recent years on processing and optimizing queries against XML data. Typically in these previous works, schema information is not considered,...