An object-oriented extensible transaction management system
Xiao, Lun
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Permalink
https://hdl.handle.net/2142/22730
Description
Title
An object-oriented extensible transaction management system
Author(s)
Xiao, Lun
Issue Date
1995
Doctoral Committee Chair(s)
Campbell, Roy H.
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Computer Science
Language
eng
Abstract
This thesis defines an extensible transaction model and shows that an extensible and customizable transaction system based on the model can be built using an object-oriented framework.
The extensible transaction model consists of transactions and transaction managers. A transaction may have a type and there may be dependencies between transactions. A transaction system that implements this transaction model allows transaction managers with different concurrency control mechanisms to run simultaneously in the system. This will cause the interoperability problem. This thesis presents a solution to this problem based on the theory of commitment ordering. With additional application information, the solution can be further improved to reduce the rate of transaction abortion.
The extensible transaction system is decomposed into four major components with each being represented by a subframework. The Transaction subframework represents transaction system interfaces for different levels of users. The TransactionManager subframework represents transaction managers for different transaction models. The ConcurrencyControlManager subframework implements various concurrency control mechanisms and the TransactionCoordinator subframework implements algorithms for the interoperability problem. All these subframeworks have been extended to show that application requirements can be satisfied by customizing one or more subframeworks. Another design consideration of the transaction system is to separate interface from implementation so that the transaction system is reconfigurable. To accomplish this design goal, the ConfigurationCoordinator class is implemented as a mapping between transaction interfaces and transaction managers.
After introducing the problems of current transaction systems, defining terminology and surveying related work, this thesis presents an extensible transaction model, defines and describes solutions to the interoperability problem, discusses how the extensible transaction system can be built and shows how subframeworks are extended and customized.
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