| 实时数据库系统中的嵌套事务 |
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| 引用本文： | 刘云生,李国徽.实时数据库系统中的嵌套事务[J].软件学报,1999,10(5):552-556. |
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| 作者姓名： | 刘云生 李国徽 |
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| 作者单位： | 华中理工大学计算机科学与技术学院,武汉,430074 |
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| 基金项目： | 本文研究得到国家自然科学基金和国防预研基金资助. |
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| 摘 要： | 传统的原子事务是由一个平坦数据库操作序列组成的,事 务的执行具有ACID(Atomicity, Consistency, Isolation, Durability)特性.然而,在实时 应用环境下,这些却不太适用.该文提出了一种支持实时应用的嵌套事务模型,给出了嵌套事 务的特性及正确性标准,着重对嵌套实时事务的优先级分派与并发控制协议进行了讨论.
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| 关 键 词： | 事务模型 嵌套事务 优先级分派 并发控制 事务正确性 实时数据库 |
| 收稿时间： | 1997/10/14 0:00:00 |
| 修稿时间： | 1998/6/22 0:00:00 |
Nested Transactions in Real-time Database Systems |
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| LIU Yun-sheng and LI Guo-hui.Nested Transactions in Real-time Database Systems[J].Journal of Software,1999,10(5):552-556. |
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| Authors: | LIU Yun-sheng and LI Guo-hui |
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| Affiliation: | College of Computer Science and Technology\ Huazhong University of Science and Technology\ Wuhan\ 430074 |
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| Abstract: | In the traditional transaction model, a trans action is a flat sequence of the database operations and the executions of trans actions have the ACID(Atomicity, Consistency, Isolation, Durability) properties. But under the real-time environment, these appear unsuitable. A nested transac tion model to support real-time applications is proposed and the properties and the correctness stanadards of nested transactions are presented in this pap er. The priority assignment strategies and the concurrency control protocol for nested real-time transactions are discussed with emphasis. |
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| Keywords: | Transaction model nested transaction pri ority assignment concurrency control transaction correctness real-time d atabase |
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