304 search results - page 2 / 61 » Schema mappings, data exchange, and metadata management |
PVLDB
2008
13 years 3 months ago
2008
Data exchange is the process of converting an instance of one schema into an instance of a different schema according to a given specification. Recent data exchange systems have l...
PODS
2008
ACM
14 years 5 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...
ER
2007
Springer
13 years 11 months ago
2007
Springer
In this paper we study the problem of schema exchange, a natural extension of the data exchange problem to an intensional level. To this end, we first introduce the notion of sche...
PODS
2009
ACM
14 years 5 months ago
2009
ACM
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
SIGMOD
2011
ACM
12 years 7 months ago
2011
ACM
This demo shows how usage information buried in query logs can play a central role in data integration and data exchange. More specifically, our system U-Map uses query logs to g...