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Database transaction management in mobile ad-hoc networks

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Disciplines
  • Design

Abstract

Universität Paderborn Fakultät für Elektrotechnik, Informatik und Mathematik Dissertation Database Transaction Management in Mobile Ad-Hoc Networks Sebastian Obermeier in partial fulfillment of the requirements for the degree of doctor rerum naturalium (Dr. rer. nat.) Paderborn, May 27th, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II Database Transaction Management in Mobile Ad-Hoc Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abstract With growing interest in mobile ad-hoc networks and increasing capabilities re- garding processing power and connectivity, an interesting and important challenge is to combine database technology with mobile devices. However, a transfer of tra- ditional research results to mobile devices is hindered by problems like message loss, unpredictable disconnections of mobile devices, and network partitioning. When applying database technology that was designed for traditional fixed-wired networks in such mobile environments, the problem of long or even infinitely long blocking times for commonly accessed resources arises. For instance, a message that releases blocked resources may never reach its destination and leads to blocking of resources longer than intended. To handle this kind of resource blocking, numerous synchro- nization strategies that reduce the overall goals “atomicity” and “full serializability” have been developed. However, reducing “atomicity” and “full serializability” can lead to data inconsistencies. In this thesis, we strike a new path to reduce protocol blocking and transaction blocking for distributed transactions in mobile ad-hoc networks without abandoning the

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