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Erschienen in:
2006 | OriginalPaper | Buchkapitel
Distributed Triggers for Peer Data Management
verfasst von : Verena Kantere, Iluju Kiringa, Qingqing Zhou, John Mylopoulos, Greg McArthur
Erschienen in: On the Move to Meaningful Internet Systems 2006: CoopIS, DOA, GADA, and ODBASE
Verlag: Springer Berlin Heidelberg
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A network of peer database management systems differs from conventional multidatabase systems by assuming absence of any central control, no global schema, transient connection of participating peer DBMSs, and evolving coordination among databases. We describe distributed triggers to support data coordination in this setting. The execution of our triggers requires coordination among the involved peer databases. We present an SQL3 compatible trigger language for the P2P setting. We also extend the SQL3 processing mechanism to this setting. Our trigger processing mechanism consists of an execution semantics, a set of termination protocols to deal with peer transiency, and a set of protocols for managing peer acquaintances in presence of distributed triggers. We show preliminary experimental results about our mechanism.