A transaction execution model for mobile computing environments
Thesis (M.Sc.)--Memorial University of Newfoundland, 2000. Computer Science Bibliography: leaves 97-106. A mobile computing environment is characterized by limited execution capability at the mobile hosts, low bandwidth and the relatively high costs of wireless connection, and frequent disconnection...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
1999
|
Subjects: | |
Online Access: | http://collections.mun.ca/cdm/ref/collection/theses2/id/279001 |
id |
ftmemorialunivdc:oai:collections.mun.ca:theses2/279001 |
---|---|
record_format |
openpolar |
spelling |
ftmemorialunivdc:oai:collections.mun.ca:theses2/279001 2023-05-15T17:23:31+02:00 A transaction execution model for mobile computing environments Momin, Kaleem A., 1973- Memorial University of Newfoundland. Dept. of Computer Science 1999 viii, 106 leaves : ill., maps. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/279001 Eng eng Electronic Theses and Dissertations (30.31 MB) -- http://collections.mun.ca/PDFs/theses/Momin_KaleemA.pdf a1476103 http://collections.mun.ca/cdm/ref/collection/theses2/id/279001 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Mobile computing Transaction systems (Computer systems) Computer multitasking Text Electronic thesis or dissertation 1999 ftmemorialunivdc 2015-08-06T19:17:37Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2000. Computer Science Bibliography: leaves 97-106. A mobile computing environment is characterized by limited execution capability at the mobile hosts, low bandwidth and the relatively high costs of wireless connection, and frequent disconnections and mobility of the mobile hosts. Such an environment naturally suggests an optimistic mode of execution, where the mobile host caches data and does the computation in disconnected mode and, on reconnection, the transaction is either committed or aborted based on the current values in the fixed network. -- We propose a new transaction execution model, based on optimistic concurrency control mechanism, which dynamically adjusts the transaction execution status at the mobile host to be consistent with the database state on the mobile support station. This increases the possibility of the transaction to commit successfully and hence makes the computation on the mobile host more meaningful. A detailed algorithm is presented and its adaptability to various aspects of the mobile environment discussed. -- We further strengthen the computation at the mobile host by facilitating partial guarantee against invalidation. This is accomplished by using a flexible concurrency control scheme which integrates optimistic and pessimistic approaches to access data items based on Read/Write and Write/Write-conflicts. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Mobile computing Transaction systems (Computer systems) Computer multitasking |
spellingShingle |
Mobile computing Transaction systems (Computer systems) Computer multitasking Momin, Kaleem A., 1973- A transaction execution model for mobile computing environments |
topic_facet |
Mobile computing Transaction systems (Computer systems) Computer multitasking |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2000. Computer Science Bibliography: leaves 97-106. A mobile computing environment is characterized by limited execution capability at the mobile hosts, low bandwidth and the relatively high costs of wireless connection, and frequent disconnections and mobility of the mobile hosts. Such an environment naturally suggests an optimistic mode of execution, where the mobile host caches data and does the computation in disconnected mode and, on reconnection, the transaction is either committed or aborted based on the current values in the fixed network. -- We propose a new transaction execution model, based on optimistic concurrency control mechanism, which dynamically adjusts the transaction execution status at the mobile host to be consistent with the database state on the mobile support station. This increases the possibility of the transaction to commit successfully and hence makes the computation on the mobile host more meaningful. A detailed algorithm is presented and its adaptability to various aspects of the mobile environment discussed. -- We further strengthen the computation at the mobile host by facilitating partial guarantee against invalidation. This is accomplished by using a flexible concurrency control scheme which integrates optimistic and pessimistic approaches to access data items based on Read/Write and Write/Write-conflicts. |
author2 |
Memorial University of Newfoundland. Dept. of Computer Science |
format |
Thesis |
author |
Momin, Kaleem A., 1973- |
author_facet |
Momin, Kaleem A., 1973- |
author_sort |
Momin, Kaleem A., 1973- |
title |
A transaction execution model for mobile computing environments |
title_short |
A transaction execution model for mobile computing environments |
title_full |
A transaction execution model for mobile computing environments |
title_fullStr |
A transaction execution model for mobile computing environments |
title_full_unstemmed |
A transaction execution model for mobile computing environments |
title_sort |
transaction execution model for mobile computing environments |
publishDate |
1999 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/279001 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (30.31 MB) -- http://collections.mun.ca/PDFs/theses/Momin_KaleemA.pdf a1476103 http://collections.mun.ca/cdm/ref/collection/theses2/id/279001 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
1766113028838785024 |