https://scholars.lib.ntu.edu.tw/handle/123456789/115502
標題: | Strategies for resolving inter-class data conflicts in mixed real-time database systems | 作者: | Lam, Kam-Yiu Kuo, Tei-Wei Lee, S.H. Tony |
關鍵字: | Real-time database systems;Concurrency control and real-time transaction scheduling | 公開日期: | 2002 | 出版社: | Taipei:National Taiwan University Dept Chem Engn | 卷: | 61 | 期: | 2002 | 起(迄)頁: | - | 來源出版物: | The Journal of Systems and Software | 摘要: | Although many efficient concurrency control protocols have been proposed for real-time database systems, they are mainly restricted for systems with a single type of real-time transactions or a mixed set of soft real-time and non-real-time transactions only. Their performance objective usually aims at the minimization of the number of missed deadlines of soft real-time transactions or to guarantee the deadline satisfaction of hard real-time transactions. So far, it is still lack of any good study on the design of concurrency control strategies for mixed real-time database systems (MRTDBS), which consist of both hard and soft real-time transactions, and together with non-real-time transactions. Due to the very different performance requirements of hard and soft realtime transactions, existing real-time concurrency control protocols may not be suitable to MRTDBS. In this paper, we propose strategies for resolving data conflicts between different types of transactions in an MRTDBS so that the performance requirements of each individual transaction type can be satisfied and, at the same time, the overall system performance can be improved. The performance of the proposed strategies is evaluated and compared with a real-time optimistic approach, which has been shown to give a better performance than the lock-based protocols for soft and firm real-time transactions. 2002 Elsevier Science Inc. All rights reserved. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/2006111501244170 | 其他識別: | 246246/2006111501244170 |
顯示於: | 資訊工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。