651 search results - page 18 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
BDA
2004
13 years 10 months ago
2004
XQuery is the emerging standard for querying XML data sources. XLive is a light XML/XQuery mediator developed at University of Versailles whose engine processes an XML algebra der...
WISE
2002
Springer
14 years 1 months ago
2002
Springer
To make the World Wide Web machine-understandable there is a strong demand both for languages describing metadata and for languages querying metadata. The Resource Description Fram...
ICDE
2000
IEEE
14 years 10 months ago
2000
IEEE
Decision-support applications in emerging environments require that SQL query results or intermediate results be shipped to clients for further analysis and presentation. These cl...
EDBT
2012
ACM
11 years 11 months ago
2012
ACM
We present an effective optimization framework for general SQLlike map-reduce queries, which is based on a novel query algebra and uses a small number of higher-order physical ope...
SIGMOD
1996
ACM
14 years 1 months ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...