This article focuses on the specification of the maintenance policy (which controls the behavior) and the maintenance window (which defines when the operation may take place).

本文将重点讨论维护策略(控制行为)和维护窗口(定义操作在何时发生)。

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Also, the new JPA specification does not include automatic container-managed relationship (CMR) maintenance.

此外，新的JPA规范没有包括容器管理关系(container - managed relationship, CMR)的自动维护。

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For developing a software product, the development process is divided into5stages:Requirements Analysis &Specification, Design, Coding, Testing, and Maintenance.

就开发软件而言，开发过程分成5步：需求分析及详细计划书，设计，编程，测试和维护。

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