The way to start threshold migration service is the same for date-based migration service.

启动阈值移植服务的方式与启动基于日期的移植服务相同。

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The traditional date-based migration looks at the date objects, comparing to system date before a migration will take place.

传统的基于数据的移植关注日期对象，在移植发生前与系统日期相比较。

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This paper presents a new parallel migration strategy for a query plan in order to adapt the continuity of queries and variability of system environment and date itself.

数据流中的查询计划需要不断进行适应性优化，针对该特征提出一种查询计划的并行迁移策略。

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While considerable attention is given to the issue of migration and its potential economic and social impacts on origin, transit and destination countries, to date very little attention has been given to understanding the livelihood struggles and opportunities that migration presents for migrants themselves, and in particular, young migrants.

UNESCO: THEMES