Abstract:

The replication mechanism provides many advantages while some problems are coming. There are many solutions about it. For these problems some factors are considered including requirement analysis, data fragment and distribution, asynchronies replica, data updating, replica mode, data collision, query and so on. According to actual circumstance the methods about these factors are selected or advanced, so that a new solution for replica in distributed database system is put and applied to a publication issuance information system and solves replica problem better.

Key words: distributed database, multimasters replication, snapshot, single master site updating, adaptive votingbased method