可用性：计划中或非计划中的宕机很可能以不同方式影响端点系统。

Availability: scheduled or unscheduled outages are likely to affect endpoint systems in different ways.

youdao

在为查询生成计划的过程中，查询优化器与非关系包装器通信。

During plan generation for the query, the query optimizer communicates with the non-relational wrapper.

youdao

RPD操作符中的远程访问计划是由包装器构造的，其中包含为调用来自非关系数据源的远程请求所需的规范。

The remote access plan contained in the RPD operator is constructed by the wrapper and contains the necessary specification to invoke the remote request from the non-relational data source.

youdao