| 并发更新环境下的视图维护异常研究 |
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| 引用本文： | 舒忠梅,李师贤,左亚尧.并发更新环境下的视图维护异常研究[J].中山大学学报(自然科学版),2005,44(5):21-24. |
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| 作者姓名： | 舒忠梅 李师贤 左亚尧 |
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| 作者单位： | 1. 中山大学计算机科学系,广东,广州,510275
2. 广东工业大学计算机学院,广东,广州,510090 |
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| 摘 要： | 通过对视图维护过程中的更新异常进行分析,发现并发更新是导致视图维护异常的主要原因.在并发环境下,数据更新和模式更新极有可能同时存在,这对视图维护工作带来极大的困难.在实例分析基础上,深入而细致地刻画了模式与数据全面并发的典型情形,为视图维护工作奠定基础.
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| 关 键 词： | 并发更新 视图维护 维护异常 |
| 文章编号： | 0529-6579(2005)05-0021-04 |
| 收稿时间： | 11 24 2004 12:00AM |
| 修稿时间： | 2004年11月24 |
View Maintaining Anomaly Analysis under Concurrent Updating Environment |
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| SHU Zhong-mei,LI Shi-xian,ZUO Ya-yao.View Maintaining Anomaly Analysis under Concurrent Updating Environment[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2005,44(5):21-24. |
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| Authors: | SHU Zhong-mei LI Shi-xian ZUO Ya-yao |
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| Institution: | 1. Department of Computer Science, Sun Yat-sen University Guangzhou 510275, China; 2. Faculty of Computer, Guangdong University of Industry, Guangzhou 5100090, China |
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| Abstract: | Based on the analysis of view maintenance anomaly, the concurrent updates are found to be one of the main reasons that cause view maintenance anomaly. Meanwhile, data update and schema change are possible to coexist under the concurrent environment which brings about many problems to view maintenance. Thus, the typical situations that scheme change mixes with data updates concurrently are analyzed and explored by using examples. |
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| Keywords: | concurrent update view maintain maintenance anomaly |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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