AIX使用内存分段体系结构，以限制共享内存和堆的段的数量。

AIX USES a memory segmented architecture that limits the number of segments used for Shared memory and heap.

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RowsInSection基于section参数传递进来的分段索引来返回条目的数量。

RowsInSection should return the number of items in whatever section it passes in via the section parameter.

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在单个dbspace中可以存储同一个表或索引的多个片段，从而减少分段表所需要的dbspace总体数量。

You can store multiple fragments of the same table or index in a single dbspace, reducing the total number of dbspaces needed for a fragmented table.

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