（多选题）
You are working on an Oracle Database 10g database. For which purposes would you use the Flashback Transaction Query feature？ （）
A To recover a dropped table.
B To recover a dropped schema.
C To recover data from a truncated table.
D To view changes made by all the transactions during a given period of time.
E To view changes made by a single transaction during a given period of time.
正确答案
答案解析
略
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