Oracle OCP 1Z0 053 Q374(Recycle Bin)

374.Which of the following statements are true regarding the Recycle Bin? (Choose all that apply.)
A. The Recycle Bin is a physical storage area for dropped objects.
B. The Recycle Bin is a logical container for dropped objects.
C. The Recycle Bin stores the results of a Flashback Drop operation.
D. The objects in the Recycle Bin are stored in the tablespace in which they were created.
Answer: BD

C錯誤。Flashback Drop實際上只是將DROP掉的表又恢復為可見而已。只要表空間不緊張，DROP物件所佔用的儲存空間不會被佔用。

The recycle bin is actually a data dictionary table containing information about dropped objects.
回收站本身是一個資料字典表，用於維護已刪除物件的原始名稱與各自系統生成名稱之間的關係。

參考：http://blog.csdn.net/rlhua/article/details/12437091

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