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PODS
2006
ACM
137views Database» more  PODS 2006»
14 years 9 months ago
Data exchange: computing cores in polynomial time
Data exchange deals with inserting data from one database into another database having a different schema. We study and solve a central computational problem of data exchange, nam...
Georg Gottlob, Alan Nash
PODS
2007
ACM
142views Database» more  PODS 2007»
14 years 9 months ago
Quasi-inverses of schema mappings
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
PODS
2008
ACM
165views Database» more  PODS 2008»
14 years 9 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
ICFP
2008
ACM
14 years 8 months ago
Functional netlists
In efforts to overcome the complexity of the syntax and the lack of formal semantics of conventional hardware description languages, a number of functional hardware description la...
Sungwoo Park, Jinha Kim, Hyeonseung Im
MOBIHOC
2007
ACM
14 years 8 months ago
Balancing traffic load in wireless networks with curveball routing
We address the problem of balancing the traffic load in multi-hop wireless networks. We consider a point-to-point communicating network with a uniform distribution of source-sink ...
Lucian Popa 0002, Afshin Rostamizadeh, Richard M. ...