The TClientDataSet is only an in-memory table at the client side, and changes to this dataset will not be saved automatically.

TClientDataSet 只是在客户端的一个内存表（in-memory table），对该数据集的更改将不会自动保存。

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The TClientDataSet component can be seen as an in-memory table that can be used as placeholder for records from other datasets.

可将 TClientDataSet 组件看作一个内存中的表，可以用作其他数据集中记录的占位符。

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Actually, a table scan of an in-memory table is much faster than searching the same table through an index, especially with the Informix light scan mechanism.

实际上，对内存中的表进行表扫描要比通过索引搜索同一表快得多，尤其是在使用 Informix 轻型扫描机制时。

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