Optimistic single-phase validation scheme for transaction management in mobile database systems = 이동 자료기지 체계에서 거래관리를 위한 낙관 단일 검증기법

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In a mobile computing environment in which communication channels are limited and have low-bandwidths, mobile transactions are long-lived and frequently disconnected with their wireless network in processing. Such peculiarities of mobile transactions make existing transaction scheduling schemes inadequate and raise new challenging research problems. We proposed a new scheduling scheme called Optimistic Single-Phase Validation for transaction scheduling in mobile database management, OSV for short. Compared to other concurrency control schemes of Distributed Database Systems in which the validation of global transaction is achieved in two-phase, OSV decreases the number of messages through wireless communication channels which can be easily delayed and disconnected. OSV has shown to prevent indefinite postponement and cascading delay associated with Optimistic Concurrencty Control scheme and Optimistic Two-Phase Locking Scheme in Mobile Distributed Database Systems. Based on the results of the performance evaluation, we conclude that OSV outperforms the other schemes such as O2PL and OCC for the disconnection toleraable requierment. OSV also has the higher probability of the transaction restart compared to other schemes.
Advisors
Moon, Song-Chunresearcher문송천researcher
Description
한국과학기술원 : 경영공학전공,
Publisher
한국과학기술원
Issue Date
2001
Identifier
165960/325007 / 000939082
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 경영공학전공, 2001.2, [ v, 113 p. ]

Keywords

transaction management; concurrency control; mobile databasae; 이동 자료기지; 거래관리; 동시성 제어

URI
http://hdl.handle.net/10203/53355
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=165960&flag=dissertation
Appears in Collection
KGSM-Theses_Ph.D.(박사논문)
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