147 search results - page 2 / 30 » Size Bounds and Query Plans for Relational Joins |
EDBT
1994
ACM
13 years 9 months ago
1994
ACM
Abstract. Good estimates of join result sizes are critical for query optimization in relational database management systems. We address the problem of incrementally obtaining accur...
ICDT
1999
ACM
13 years 10 months ago
1999
ACM
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
SIGMOD
2006
ACM
14 years 5 months ago
2006
ACM
Consider an XML view defined over a relational database, and a user query specified over this view. This user XML query is typically processed using the following steps: (a) our t...
TDM
2004
13 years 7 months ago
2004
To be able to handle the ever growing volumes of XML documents, effective and efficient data management solutions are needed. Managing XML data in a relational DBMS has great pote...
VLDB
2004
ACM
14 years 5 months ago
2004
ACM
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....