708 search results - page 33 / 142 » Optimizing SQL Queries over Text Databases |
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
— Uncertain data is quite common nowadays in a variety of modern database applications. At the same time, the join operation is one of the most important but expensive operations...
KDD
2000
ACM
13 years 11 months ago
2000
ACM
To improve the accuracy in terms of precision and recall of an audio information retrieval system we have created a domainspecific ontology (a collection of key concepts and their...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
CIKM
2010
Springer
13 years 6 months ago
2010
Springer
Most database systems allow query processing over attributes that are derived at query runtime (e.g., user-defined functions and remote data calls to web services), making them e...
CIKM
2004
Springer
14 years 29 days ago
2004
Springer
An important class of queries is the LIKE predicate in SQL. In the absence of an index, LIKE queries are subject to performance degradation. The notion of indexing on substrings (...