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A Mobile Transaction System for Open Networks

Author(s): R. B. Patel | Anu

Journal: BVICAM's International Journal of Information Technology
ISSN 0973-5658

Volume: 1;
Issue: 1;
Date: 2008;
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Keywords: MH | Transaction | ACID | TPS.

The evolution of mobile computing devices and wirelessnetwork has created a new mobile computing environment.Users equipped with portable devices can access, retrieve andprocess information while in mobility. Mobile devices likelaptops; mobile phones have become more powerful dataprocessing elements. Traditional transaction model has movedforwarding to mobile transaction system. Autonomousdecentralized systems represent examples of environments forwhich the use of mobile codes is quite convenient. For example,designing highly scalable distributed systems in a massive,heterogeneous and multi organizational distributedenvironment seems to benefit much from mobile codes, giventheir ability to decentralize processing; to adapt to theautonomy of systems; to flexibly allow the management ofinstalled code; and their support to the interaction with humanusers. This paper presents a hierarchical transaction model forthe execution of distributed transactions with mobile code onopen networks. The developed transaction model is built uponthe concept for fault tolerance of mobile code based executions.The presented transaction model is an open nested transactionmodel. This model supports those parts of a distributedtransaction which is executed asynchronously in relation toother parts of the same global transaction. Furthermore, themodel is able to recover the execution of a transaction when asub-transaction of this transaction becomes unavailable for along period of time and the results of a comparison ofdeveloped model, with some existing ones, are also reported.We have also suggested and implemented an efficient namingand locating mechanism for tracing/finding the status of atransaction whenever fault(s) arises in the transactionprocessing system/network or processing of a sub-transactionis delayed.

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