Multiversion-based view maintenance over distributed data sources

  title={Multiversion-based view maintenance over distributed data sources},
  author={Songting Chen and Bin Liu and Elke A. Rundensteiner},
  journal={ACM Trans. Database Syst.},
Materialized views can be maintained by submitting maintenance queries to the data sources. However, the query results may be erroneous due to concurrent source updates. State-of-the-art maintenance strategies typically apply compensations to resolve such conflicts and assume all source schemata remain stable over time. In a loosely coupled dynamic environment, the sources may autonomously change not only their data but also their schema or semantics. Consequently, either the maintenance or the… CONTINUE READING
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