176 search results - page 6 / 36 » Answering aggregate queries in data exchange |
ICDE
2009
IEEE
14 years 10 months ago
2009
IEEE
Abstract-- Privacy protection is a major concern when microdata needs to be released for ad hoc analyses. This has led to a lot of recent research in privacy goals and table anonym...
PODS
2010
ACM
14 years 1 months ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
AMW
2009
13 years 9 months ago
2009
Abstract. A Data Warehouse (DW) is a data repository that organizes and physically integrates data from multiple sources under special kinds of schemas. A DW is composed by a set o...
EDBT
2008
ACM
14 years 8 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...
KDD
1999
ACM
14 years 24 days ago
1999
ACM
Efficiently answering decision support queries is an important problem. Most of the work in this direction has been in the context of the data cube. Queries are efficiently answer...