20 search results - page 1 / 4 » Aggregate Query Answering under Uncertain Schema Mappings |
ICDE
2009
IEEE
14 years 6 months ago
2009
IEEE
Recent interest in managing uncertainty in data
VLDB
2011
ACM
12 years 11 months ago
2011
ACM
Schema mappings are high-level specifications that describe the relationship between two database schemas. They are an important tool in several areas of database research, notab...
PODS
2008
ACM
14 years 4 months ago
2008
ACM
Data exchange, also known as data translation, has been extensively investigated in recent years. One main direction of research has focused on the semantics and the complexity of...
ICDE
2012
IEEE
11 years 7 months ago
2012
IEEE
— Uncertainties in data arise for a number of reasons: when the data set is incomplete, contains conflicting information or has been deliberately perturbed or coarsened to remov...
ICDT
2010
ACM
13 years 9 months ago
2010
ACM
In XML data exchange, a schema mapping specifies rules for restructuring a source document under the target schema, and queries over the target document must be answered in a way...