临时dbspace：临时dbspace是专门为存储临时表保留的dbspace。
Temp dbspace: a temporary dbspace is a dbspace reserved exclusively for the storage of temporary tables.
大多数人通常会保留 10% 的表空间用作空闲空间，但在高易失性的应用程序中，这个比例会更高。
Most folks typically reserve 10 percent of the total table space as free space, but you will often see more with highly volatile applications.
此外，每一个数据库可拥有自己的数据库配置文件、目录表、日志、保留的缓冲池区域和表空间。
In addition, each database has its own database configuration file, catalog tables, logs, reserved buffer pool area, and table Spaces.
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