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Erschienen in:
2007 | OriginalPaper | Buchkapitel
Acquaintance Based Consistency in an Instance-Mapped P2P Data Sharing System During Transaction Processing
verfasst von : Md Mehedi Masud, Iluju Kiringa
Erschienen in: On the Move to Meaningful Internet Systems 2007: CoopIS, DOA, ODBASE, GADA, and IS
Verlag: Springer Berlin Heidelberg
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The paper presents a transaction processing mechanism in a peer-to-peer (P2P) database environment that combines both P2P and database management systems functionalities. We assume that each peer has an independently created relational database and data heterogeneity between two peers is resolved by data-level mappings. For such an environment, the paper first introduces the execution semantics of a transaction and shows the challenges for concurrent execution of transactions, initiated from a peer, over the network. Later the paper presents a correctness criterion that ensures the correct execution of transactions over the P2P network. We present two approaches ensuring the correctness criterion and finally discuss the implementation issues.