Changingtables — even changing column type — can be done with no downtime, as can moving a table from one table space to another.
可以在不停机的情况下修改表(甚至修改列的类型)，还可以在表空间之间转移表。
2
This solution is particularly beneficial at the start of a project, where tables and fields are changing constantly, and keeping up with rapid changes is crucial.
这个解决方案在项目开始的时候特别有用，因为这时表和字段不断地变化，所以跟上迅速的变化是至关重要的。
3
The fact table only contains IDs for referencing dimensions tables, and measures for measuring the changing or performance of all dimension members.