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» Answering aggregate queries in data exchange
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PODS
2008
ACM
170views Database» more  PODS 2008»
14 years 11 months ago
Answering aggregate queries in data exchange
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...
Foto N. Afrati, Phokion G. Kolaitis
PODS
2004
ACM
120views Database» more  PODS 2004»
14 years 11 months ago
Locally Consistent Transformations and Query Answering in Data Exchange
Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema. Given a source instance, there may be many solutions ? ta...
Marcelo Arenas, Pablo Barceló, Ronald Fagin...
DOLAP
2004
ACM
14 years 4 months ago
Aggregate queries in peer-to-peer OLAP
A peer-to-peer (P2P) data management system consists essentially of a network of peer systems, each maintaining full autonomy over its own data resources. Data exchange between pe...
Mauricio Minuto Espil, Alejandro A. Vaisman
PODS
2005
ACM
132views Database» more  PODS 2005»
14 years 11 months ago
XML data exchange: consistency and query answering
Marcelo Arenas, Leonid Libkin