Locking Primitives in a Database System

Locking Primitives in a Database System
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锁定数据库系统中的原语

DOI:
10.1145/322358.322363
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发表时间:
1983
期刊:
J. ACM
影响因子:
--
通讯作者:
H. F. Korth
H. F. Korth
中科院分区:
--
文献类型:
--
作者:
H. F. Korth

文献摘要

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锁定常用的并发控制Mechamsm M数据库系统。大多数系统提供一种或多种锁定模式,通常是读写模式。在这里,假定每个数据库操作都假定一个操作锁定模式,并且“良好”锁定兼容函数的标准称为最大permtsssissive,是Gtven Operatmnal模式,用于定义与任意锁定对话相对应的通用更新模式。系统r的意图模式的概念扩展到arbnrary锁定模式,并研究了创建的锁定模式类别之间的mteractmn。
Locking ~s a frequently used concurrency control mechamsm m database systems. Most systems offer one or more lock modes, usually read and write modes. Here, one operatwnal lock mode is assumed for each database operation, and a criterion for "good" lock compatibdlty functions, called maximal permtssiveness, is gtven Operatmnal modes are used as a basis to define generalized update modes that correspond to arbitrary lock conversions. The notion of intention modes from System R is extended to arbnrary lock modes, and the mteractmn among the classes of lock modes thus created is studied.