175
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ICDT
2010
ACM
16 years 3 months ago
2010
ACM
The work reported here lays the foundations of data exchange in the presence of probabilistic data. This requires rethinking the very basic concepts of traditional data exchange, ...
169
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ICDT
2010
ACM
16 years 3 months ago
2010
ACM
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a secondorder tgd (SO tgd). We consider the question of...
276
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ICDT
2010
ACM
16 years 3 months ago
2010
ACM
We consider a fragment of XPath named `forward-XPath', which contains all descendant and rightwards sibling axes as well as data equality and inequality tests. The satisfiabi...