创建数据库分区组内的表空间。
当创建数据库分区组时,同时会创建分区映射。
The partitioning map is created when a database partition group is created.
当创建或修改一个数据库分区组时,就会有一个与之关联的分区映射。
When a database partition group is created or modified, a partitioning map is associated with it.
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