777 search results - page 67 / 156 » Optimization of Relational Preference Queries |
ICDE
1997
IEEE
14 years 11 months ago
1997
IEEE
Data warehouses collect copies of information from remote sources into a single database. Since the remote data is cached at the warehouse, it appears as local relations to the us...
WWW
2008
ACM
14 years 10 months ago
2008
ACM
Learning to rank is a new statistical learning technology on creating a ranking model for sorting objects. The technology has been successfully applied to web search, and is becom...
ICDE
2010
IEEE
13 years 10 months ago
2010
IEEE
A way to optimize performance of relational row store databases is to reduce the row widths by vertically partitioning tables into table fractions in order to minimize the number ...
ICDE
2009
IEEE
13 years 7 months ago
2009
IEEE
Data provenance is information that describes how a given data item was produced. The provenance includes source and intermediate data as well as the transformations involved in pr...
SIGMOD
1999
ACM
14 years 2 months ago
1999
ACM
In large data warehousing environments, it is often advantageous to provide fast, approximate answers to complex aggregate queries based on statistical summaries of the full data....