20878 search results - page 456 / 4176 » Database |
209
click to vote
ICDT
2007
ACM
16 years 1 months ago
2007
ACM
Abstract. We study containment of conjunctive queries that are evaluated over databases that may contain tuples with null values. We assume the semantics of SQL for single block qu...
152
click to vote
ICDT
2007
ACM
16 years 1 months ago
2007
ACM
We introduce a new abstract model of database query processing, finite cursor machines, that incorporates certain data streaming aspects. The model describes quite faithfully what...
160
click to vote
CLEANDB
2006
ACM
16 years 24 days ago
2006
ACM
The paper presents a data cleansing technique for string databases. We propose and evaluate an algorithm that identifies a group of strings that consists of (multiple) occurrence...
211
click to vote
AMFG
2005
IEEE
16 years 14 days ago
2005
IEEE
The development of web and digital camera nowadays has made it easier to collect more than hundreds of thousands of examples. How to train a face detector based on the collected en...
188
Voted
EGC
2005
Springer
16 years 11 days ago
2005
Springer
We present a new approach to the grid technology that is based on federated databases and updatable views. Views are used in two ways: (1) as wrappers of local servers that adopt l...