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CIKM
2004
Springer
14 years 2 months ago
Extending and inferring functional dependencies in schema transformation
We study the representation, derivation and utilization of a special kind of constraints in multidatabase systems. A major challenge is when component database schemas are schemat...
Qi He, Tok Wang Ling
ADC
2000
Springer
98views Database» more  ADC 2000»
14 years 1 months ago
A Generalized Modeling Framework for Schema Versioning Support
Advanced object-oriented applications require the management of schema versions, in order to cope with changes in the structure of the stored data. Two types of versioning have be...
Fabio Grandi, Federica Mandreoli, Maria Rita Scala...
EDBT
2009
ACM
148views Database» more  EDBT 2009»
14 years 16 days ago
MVT: a schema mapping validation tool
Schema mappings define relationships between schemas in a declarative way. We demonstrate MVT, a mapping validation tool that allows the designer to ask whether the mapping has ce...
Guillem Rull, Carles Farré, Ernest Teniente...
ADBIS
2006
Springer
81views Database» more  ADBIS 2006»
14 years 2 months ago
Non-blocking Materialized View Creation and Transformation of Schemas
In existing systems, user transactions get blocked during materialized view creation and non-trivial database schema transformations. Blocking user transactions is not an option in...
Jørgen Løland, Svein-Olaf Hvasshovd
EDBT
2012
ACM
306views Database» more  EDBT 2012»
11 years 11 months ago
Clydesdale: structured data processing on MapReduce
MapReduce has emerged as a promising architecture for large scale data analytics on commodity clusters. The rapid adoption of Hive, a SQL-like data processing language on Hadoop (...
Tim Kaldewey, Eugene J. Shekita, Sandeep Tata