98 search results - page 10 / 20 » Specifying Schema Mappings for Query Reformulation in Data I... |
ICDT
2007
ACM
14 years 1 months ago
2007
ACM
Abstract. We define and study formal privacy guarantees for information integration systems, where sources are related to a public schema by mappings given by source-to-target dep...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
To answer user queries, a data integration system employs a set of semantic mappings between the mediated schema and the schemas of data sources. In dynamic environments sources o...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Modern information systems often store data that has been transformed and integrated from a variety of sources. This integration may obscure the original source semantics of data ...
PVLDB
2010
13 years 6 months ago
2010
Supporting legacy applications when the database schema evolves represents a long-standing challenge of practical and theoretical importance. Recent work has produced algorithms a...
PVLDB
2008
13 years 6 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...