Scheduling real-time transactions: a performance evaluation
ACM Transactions on Database Systems (TODS)
Priority inheritance in soft real-time databases
Real-Time Systems - Special issue: real-time databases
Distributed and Parallel Databases - Special issue: Research topics in distributed and parallel databases
Mobile wireless computing: challenges in data management
Communications of the ACM
A study of two transaction-processing architectures for distributed real-time data base systems
Journal of Systems and Software
A two-phase approach to predictably scheduling real-time transactions
Performance of concurrency control mechanisms in centralized database systems
On being optimistic about real-time constraints
PODS '90 Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Updates and view maintenance in soft real-time database systems
Proceedings of the eighth international conference on Information and knowledge management
Concurrency control in mobile distributed real-time database systems
Information Systems
Wireless and Mobile Network Architectures
Wireless and Mobile Network Architectures
Temporal and Real-Time Databases: A Survey
IEEE Transactions on Knowledge and Data Engineering
An Integrated Real-Time Locking Protocol
Proceedings of the Eighth International Conference on Data Engineering
Proceedings of the 11 IPPS/SPDP'99 Workshops Held in Conjunction with the 13th International Parallel Processing Symposium and 10th Symposium on Parallel and Distributed Processing
Supporting predictability in real-time database systems
RTAS '96 Proceedings of the 2nd IEEE Real-Time Technology and Applications Symposium (RTAS '96)
Maintaining consistency of data in mobile distributed environments
ICDCS '95 Proceedings of the 15th International Conference on Distributed Computing Systems
Real-Time Databases and Data Services
Real-Time Systems
Performance evaluation of protocols for group-oriented mobile services
Mobile Networks and Applications
International Journal of Network Management
A transaction model and multiversion concurrency control for mobile database systems
Distributed and Parallel Databases
Simulation-based evaluation of transactions support for group-oriented mobile commerce
International Journal of Mobile Communications
A multi-version data model and semantic-based transaction processing protocol
ADBIS'05 Proceedings of the 9th East European conference on Advances in Databases and Information Systems
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With the significant advances in mobile computing technology, there is an increasing demand for various mobile applications to process transactions in a real-time fashion. When remote data access is considered in a mobile environment, data access delay becomes one of the most serious problems in meeting transaction deadlines. In this paper, we propose a multi-version data model and adopt the relative consistency as the correctness criterion for processing of real-time transactions in a mobile environment. The purpose is to reduce the impacts of unpredictable and unreliable mobile network on processing of the real-time transactions. Under the proposed model, the overheads for concurrency control can be significantly reduced, and the data availability is much enhanced even under network failures. A real-time transaction may access stale data, provided that they are relatively consistent with the data accessed by the transaction, and the staleness of the data is within the requirements. An image transaction model, which pre-fetches multiple data versions at fixed hosts, is proposed to reduce the data access delay and to simplify the management of the real-time transactions in a mobile environment. The image transaction model also helps in reducing the transaction-restart overheads and minimizing the impacts of the unpredictable performance of mobile network on transaction executions.