Which two statements regarding the Flashback Table feature are correct?（）<br>A:Flashback Table can be performed on system tables.<br>B:Flashback Table operation does not shrink the segments.<br>C:Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.<br>D:Flashback Table operation acquires exclusive data manipulation language (DML) locks.

Which two statements regarding the Flashback Table feature are correct?（）
A:Flashback Table can be performed on system tables.
B:Flashback Table operation does not shrink the segments.
C:Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.
D:Flashback Table operation acquires exclusive data manipulation language (DML) locks.

出自：Oracle认证

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