24 search results - page 1 / 5 » Answering Keyword Queries involving Aggregates and GROUPBY o... |
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
Keyword search has been recently extended to relational databases to retrieve information from text-rich attributes. However, all the existing methods focus on finding individual...
WAIM
2010
Springer
13 years 2 months ago
2010
Springer
Keyword search in relational databases has been widely studied in recent years. Most of the previous studies focus on how to answer an instant keyword query. In this paper, we focu...
DEXAW
1998
IEEE
13 years 8 months ago
1998
IEEE
Materialized views offer opportunities for significant performance gain in query evaluation by providing fast access to pre-computed data. The question of when and how to use a ma...
CIKM
2008
Springer
13 years 6 months ago
2008
Springer
Answering queries over ontologies is an important issue for the Semantic Web. Aggregate queries were widely studied for relational databases but almost no results are known for ag...
CIKM
2009
Springer
13 years 11 months ago
2009
Springer
Most of existing methods of keyword search over relational databases find the Steiner trees composed of relevant tuples as the answers. They identify the Steiner trees by discove...