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。

youdao

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