Observations on optimistic concurrency control schemes
Information Systems - Special issue: Databases:8Mtheir creation, management and utilization
Distributed Version Management for Read-Only Actions
IEEE Transactions on Software Engineering - Special issue on distributed systems
Concurrency control and recovery in database systems
Concurrency control and recovery in database systems
The datacycle architecture for very high throughput database systems
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Sleepers and workaholics: caching strategies in mobile environments
SIGMOD '94 Proceedings of the 1994 ACM SIGMOD international conference on Management of data
Broadcast disks: data management for asymmetric communication environments
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Bit-sequences: an adaptive cache invalidation method in mobile client/server environments
Mobile Networks and Applications
Efficient concurrency control for broadcast environments
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
Energy-Efficient Caching for Wireless Mobile Computing
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
Disseminating Updates on Broadcast Disks
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
On the Performance of Transaction Processing in Broadcast Environments
MDA '99 Proceedings of the First International Conference on Mobile Data Access
Supporting Read-Only Transactions in Wireless Broadcasting
DEXA '98 Proceedings of the 9th International Workshop on Database and Expert Systems Applications
Broadcast on Demand: Efficient and Timely Dissemination of Data in Mobile Environments
RTAS '97 Proceedings of the 3rd IEEE Real-Time Technology and Applications Symposium (RTAS '97)
Scalable Processing of Read-Only Transactions in Broadcast Push
ICDCS '99 Proceedings of the 19th IEEE International Conference on Distributed Computing Systems
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The broadcast environment has asymmetric communication aspect that is typically much greater communication bandwidth available from server to clients than that of the opposite direction. In addition, mobile computing systems generate mostly read-only transactions from mobile clients for retrieving different types of information such as stock data, traffic information and news updates. Since previous concurrency control protocols, however, do not consider such a particular characteristics, the performance is degraded when previous schemes are applied to the broadcast environment. In this paper, we propose optimistic concurrency control based on timestamp interval for broadcast environment. The following requirements are satisfied by adapting weak consistency that is the most appropriate correctness criterion of read-only transactions: (1) the mutual consistency of data maintained by the server and read by clients (2) the currency of data read by clients. We also adopt the Timestamp Interval protocol to check the weak consistency efficiently. As a result, we improved a performance by reducing unnecessary aborts and restarts of read-only transactions caused when global serializability was adopted.