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You need to maintain a record of all transactions on some tables for at least three years. Automatic undo management is enabled for the database. What must you do accomplish this task?（）
A:Enable supplemental logging for the database.
B:Specify undo retention guarantee for the database
C:Create Flashback Data Archive in the tablespace where the tables are stored.
D:Create Flashback Data Archive and enable Flashback Data Archive for specific tables

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出自：Oracle认证

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