Recovery semantics for a DB/DC system

Charles T. Davies
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引用次数: 126

Abstract

Presented is a unified, systematic view of integrity/recovery as it relates to a data-processing system—whether man, machine, or both. The concept, sphere of control (SOC), as a bound around a process, is developed to permit describing and solving many of the rather aggravating problems of auditability, repeatability, reproducibility, scheduling, consistency, recovery and general integrity. Identified are the relationships among resources and SOCs, the types of resource status which must be maintained, and the effects that dependency versus commitment has on process scheduling and recovery strategy. Virtually ignored are the problems of lost storage for which redundancy is a solution, mainly because information already exists in this realm.
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DB/DC系统的恢复语义
呈现的是一个统一的,系统的完整性/恢复视图,因为它涉及到一个数据处理系统-无论是人,机器,或两者。控制范围(SOC)的概念,作为一个过程的边界,允许描述和解决许多相当严重的问题,如可审计性、可重复性、可再现性、调度、一致性、恢复和一般完整性。确定了资源和soc之间的关系、必须维护的资源状态类型,以及依赖与承诺对进程调度和恢复策略的影响。实际上被忽略的是存储丢失的问题,冗余是一个解决方案,主要是因为信息已经存在于这个领域。
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