创建一个使用这个新缓存池的新表格空间。

Create a new table space that USES the new buffer pool.

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然后通过FETCH节点获取合格的RID以提取来自表格空间的相应记录和数据页面到db2缓冲池。

The qualifying RIDs are then taken by the fetch node to fetch the corresponding records and data pages from the table space into the DB2 buffer pool.

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为了获得超常规的速度，在提取、恢复和移动数据时，High Performance Unload直接从DB2表格空间容器中读取数据，而不是使用数据库引擎读取数据。

To achieve its exceptional speed, High Performance Unload reads directly from the DB2 table space containers instead of using the database engine when extracting, recovering, and moving data.

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