Sciweavers

27 search results - page 6 / 6
» Consistent Query Answering: Opportunities and Limitations
Sort
View
WWW
2002
ACM
14 years 5 months ago
Searching with numbers
A large fraction of the useful web comprises of specification documents that largely consist of hattribute name, numeric valuei pairs embedded in text. Examples include product in...
Rakesh Agrawal, Ramakrishnan Srikant
PODS
2009
ACM
86views Database» more  PODS 2009»
14 years 5 months ago
Reverse data exchange: coping with nulls
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...