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» Preserving mapping consistency under schema changes
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DKE
2006
79views more  DKE 2006»
14 years 12 months ago
Schema versioning in data warehouses: Enabling cross-version querying via schema augmentation
As several mature implementations of data warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to manage the chang...
Matteo Golfarelli, Jens Lechtenbörger, Stefan...
ICDT
2010
ACM
133views Database» more  ICDT 2010»
15 years 4 months ago
On the Tradeoff between Mapping and Querying Power in XML Data Exchange
In XML data exchange, a schema mapping specifies rules for restructuring a source document under the target schema, and queries over the target document must be answered in a way...
Shunichi Amano, Claire David, Leonid Libkin, Filip...
PODS
2004
ACM
120views Database» more  PODS 2004»
16 years 7 hour ago
Locally Consistent Transformations and Query Answering in Data Exchange
Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema. Given a source instance, there may be many solutions ? ta...
Marcelo Arenas, Pablo Barceló, Ronald Fagin...
CAISE
2008
Springer
15 years 1 months ago
Round-Trip Engineering for Maintaining Conceptual-Relational Mappings
Conceptual-relational mappings between conceptual models and relational schemas have been used increasingly to achieve interoperability or overcome impedance mismatch in modern dat...
Yuan An, Xiaohua Hu, Il-Yeol Song
HOTSWUP
2009
ACM
15 years 4 months ago
Automating Database Schema Evolution in Information System Upgrades
The complexity, cost, and down-time currently created by the database schema evolution process is the source of incessant problems in the life of information systems and a major s...
Carlo Curino, Hyun Jin Moon, Carlo Zaniolo