Mobile agent fault tolerance in autonomous decentralized database systems

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In the background of e-business, the autonomous decentralized database system has been proposed to cope with the dynamic and heterogenous requirements of users. In a diversified environment of service provision and service access, the ADDS provides flexibility to integrate heterogeneous and autonomous systems while assuring the timeliness and high availability. In this system, mobile agent based updates has been shown effective to resolve the consistency issue. The use of mobile agent, however, is critical and requires reliability in regard to mobile agent failures that may lead to bad response time and hence the availability of the system may lost. In this paper, we propose technique for resolving the mobile agent failures that are the most critical aspect of fault tolerance in the system. The technique employs only the local knowledge of the system hence the autonomy and decentralization of the system are preserved.

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