Validation concurrency control protocol in parallel real-time database systems

LEI Xiang-dong(雷向东) YUAN Xiao-li(袁晓莉)

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Validation concurrency control protocol in parallel real-time database systems

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In parallel real-time database systems, concurrency control protocols must satisfy time constraints as well as the integrity constraints. The authors present a validation concurrency control(VCC) protocol, which can enhance the performance of real-time concurrency control mechanism by reducing the number of transactions that might miss their deadlines, and compare the performance of validation concurrency control protocol with that of HP2PL(High priority two phase locking) protocol and OCC-TI-WAIT-50(Optimistic concurrency control-time interval-wait-50) protocol under shared-disk architecture by simulation. The simulation results reveal that the protocol the author presented can effectively reduce the number of transactions restarting which might miss their deadlines and performs better than HP2PL and OCC-TI-WAIT-50. It works well when arrival rate of transaction is lesser than threshold. However, due to resource contention the percentage of missing deadline increases sharply when arrival rate is greater than the threshold.

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来源
《中南大学学报》 |2002年第3期|197-201|共5页
作者
LEI Xiang-dong(雷向东) YUAN Xiao-li(袁晓莉);
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作者单位

College of Information Science and Engineering;

Central South University;

Changsha 410083;

China College of Information Science and Engineering;

Central South University;

Changsha 410083;

China;

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原文格式 PDF
正文语种 chi
中图分类计算技术、计算机技术;
关键词
parallel; database; system; real-time; database; concurrency; control; validation; transactions;

机译：并行数据库系统实时数据库并发控制验证事务;

Validation concurrency control protocol in parallel real-time database systems

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