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Fault-Tolerant Algorithms for Distributed Databases

Fault-Tolerant Algorithms for Distributed Databases
分布式数据库的容错算法
批准号:
8809284
负责人:
Amr El Abbadi
金额:
$6.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1988
资助国家:
美国
项目状态:
已结题
起止时间:
1988-07-01 至 1990-12-31

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中文摘要
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英文摘要
The availability of data in a distributed database can be increased by replication, where a data object may have several copies residing on different sites. If data is replicated, it may still be available after failures. However, this increase in data availability may result in an increase in the cost of opertion execution. The research proposed herein seeks to develop methods that increase data availability at low costs. Futhermore, the mechanisms we explore allow the data to remain accessible in spite of site or communication failures, even when such failures lead to network partitioning. We propose to develop a new paradigm for fault tolerant concurrency control protocols. This paradigm furthers our understanding of such protocols, and provides us with new insights for the development of new protocols. We specifically proposed development protocols that allow the execution of read-only transactions and the efficient execution of transactions in databases with well defined information flow patterns. Finally, we propose to investigate methods for increasing the availability of abstract data objects where semantic information is available about the data objects in the databaase.
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