SSDBM
2008
IEEE
13 years 11 months ago
2008
IEEE
Increasingly, many data sources appear as online databases, hidden behind query forms, thus forming what is referred to as the deep web. It is desirable to have systems that can pr...
ICDE
2000
IEEE
14 years 5 months ago
2000
IEEE
In information-integration systems, sources may have diverse and limited query capabilities. In this paper we show that because sources have restrictions on retrieving their infor...