10542 search results - page 2038 / 2109 » A General Notion of Useful Information |
271
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Database archiving is important for the retrieval of old versions of a database and for temporal queries over the history of data. We demonstrate XArch, a management system for ma...
228
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Schema mappings are logical assertions that specify the relationships between a source and a target schema in a declarative way. The specification of such mappings is a fundamenta...
168
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PODS
2008
ACM
16 years 6 months ago
2008
ACM
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...
178
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ICSE
2005
IEEE-ACM
16 years 6 months ago
2005
IEEE-ACM
Existing spreadsheet systems allow users to change cells arbitrarily, which is a major source of spreadsheet errors. We propose a system that prevents errors in spreadsheets by re...
197
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ICFP
2008
ACM
16 years 6 months ago
2008
ACM
ML modules provide hierarchical namespace management, as well as fine-grained control over the propagation of type information, but they do not allow modules to be broken up into ...