The Mariposa distributed database management system
ACM SIGMOD Record
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International Journal of Information and Communication Technology
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The Mariposa distributed data manager uses an economic model for managing the allocation of both storage objects and queries to servers. We present extensions to the economic model which support replica management, as well as our mechanisms for propagating updates among replicas. We show how our replica control mechanism can be used to provide consistent, although potentially stale, views of data across many machines without expensive per-transaction synchronization. We present a rule-based conflict resolution mechanism, which can be used to enhance traditional time-stamp serialization. We discuss the effects of our replica system on query processing for both read-only and read-write queries. We further demonstrate how the replication model and mechanisms naturally support name service in Mariposa.