n. hotlist
misc. activity list
当根据活动表或索引空间执行时，会降低并发性和可用性。
They can reduce concurrency and availability when executed against a live table or index space.
创建索引时，索引的默认名称基于表设计器中的活动表。
When an index is created, its default name is based on the active table in table Designer.
如莫斯科的交换机活动表所示；晚上，月黑风高，打电话的人们少了很多。
Activity of Moscow switchboards shown. At night people call each other much less.
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