This paper presents a new parallelmigration 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。
2
Because DB2 High Performance unload performs the loading and the unloading steps in parallel by using named pipes, the migration process is fast.
因为DB 2 High Performance Unload使用指定管道来并行执行加载和卸载步骤，所以迁移过程非常快。
3
Because it involves maintaining parallel development streams, using tricks using model fusing techniques, and performing the actual model migration steps more than once.