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SIGMOD
2004
ACM
150views Database» more  SIGMOD 2004»
16 years 6 months ago
When one Sample is not Enough: Improving Text Database Selection Using Shrinkage
Database selection is an important step when searching over large numbers of distributed text databases. The database selection task relies on statistical summaries of the databas...
Panagiotis G. Ipeirotis, Luis Gravano
SIGMOD
2001
ACM
95views Database» more  SIGMOD 2001»
16 years 6 months ago
Updating XML
As XML has developed over the past few years, its role has expanded beyond its original domain as a semantics-preserving markup language for online documents, and it is now also t...
Igor Tatarinov, Zachary G. Ives, Alon Y. Halevy, D...
PODS
2002
ACM
98views Database» more  PODS 2002»
16 years 6 months ago
On Propagation of Deletions and Annotations Through Views
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
Peter Buneman, Sanjeev Khanna, Wang Chiew Tan
PODS
2008
ACM
165views Database» more  PODS 2008»
16 years 6 months ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
ICDE
2010
IEEE
260views Database» more  ICDE 2010»
16 years 6 months ago
Locating Mapped Resources in Web 2.0
Abstract-- Mapping mashups are emerging Web 2.0 applications in which data objects such as blogs, photos and videos from different sources are combined and marked in a map using AP...
Anthony K. H. Tung, Beng Chin Ooi, Dongxiang Zhang