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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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