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ThinkMind // International Journal On Advances in Telecommunications, volume 2, number 2 and 3, 2009 // View article tele_v2_n23_2009_2


Escrow Serializability and Reconciliation in Mobile Computing using Semantic Properties

Authors:
Fritz Laux
Tim Lessner

Keywords: serializability; mobile computing; transactions

Abstract:
Transaction processing is of growing importance for mobile computing. Booking tickets, flight reservation, banking, ePayment, and booking holiday arrangements are just a few examples for mobile transactions. Due to temporarily disconnected situations the synchronisation and consistent transaction processing are key issues. Serializability is a too strong criteria for correctness when the semantics of a transaction is known. We introduce a transaction model that allows higher concurrency for a certain class of transactions defined by its semantic. The transaction results are ”escrow serializable” and the synchronisation mechanism is nonblocking. The model copes with many mobile scenarios and is able to improve existing synchronization approaches through an automatic replay approach, whereas transaction migration or transactional composition in mobile interaction is not considered. Rather we provide an optimistic transaction model residing at middleware layer. Experimental implementation showed higher concurrency, transaction throughput, and less resources used than common locking or optimistic protocols.

Pages: 72 to 87

Copyright: Copyright (c) to authors, 2009. Used with permission.

Publication date: December 1, 2009

Published in: journal

ISSN: 1942-2601

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