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Database replication protocols based on group communication primitives have recently emerged as a promising technology to improve database fault-tolerance and performance. Roughly speaking, this approach consists in exploiting the order and atomicity properties provided by group communication primitives or, more specifically atomic broadcast, to guarantee transaction properties. This paper proposes a systematic classification of non voting database replication algorithms based on atomic broadcast.
latest'' snapshot of the database, generalized snapshot isolation allows the use of older'' snapshots, facilitating a replicated implementation. We show that many of the desirable properties of snapshot isolation remain. In particular, under certain assumptions on the transaction worklRachid Guerraoui, Fernando Pedone