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A Survey of Approaches to Database Replication
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Author(s): F. D. Muñoz-Escoí (Universidad Politécnica de Valencia, Spain), H. Decker (Universidad Politécnica de Valencia, Spain), J. E. Armendáriz (Universidad Politécnica de Valencia, Spain)and J. R. González de Mendívil (Universidad Politécnica de Valencia, Spain)
Copyright: 2009
Pages: 7
Source title:
Handbook of Research on Innovations in Database Technologies and Applications: Current and Future Trends
Source Author(s)/Editor(s): Viviana E. Ferraggine (UNICEN, Argentina), Jorge Horacio Doorn (UNICEN, Argentina)and Laura C. Rivero (UNICEN, Argentina)
DOI: 10.4018/978-1-60566-242-8.ch081
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Abstract
Databases are replicated in order to get two complementary features: performance improvement and high availability. Performance can be improved when a database is replicated since each replica can serve read-only accesses without requiring any coordination with the rest of replicas. Thus, when most of the application accesses to the data are read-only, they can be served locally and without preventing accesses in the same or other replicas. Moreover, with a careful management, the failure of one or more replicas does not compromise the availability of the database.
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