What are the prerequisites for performing flashback transactions? （）(Choose all that apply)<br>A:Supplemental log must be enabled<br>B:Supplemental log must be enabled for the primary key<br>C:Undo retention guarantee for the database must be configured<br>D:”EXECUTE “ permission on the DBMS_FLASHBACK package must be granted to the user

What are the prerequisites for performing flashback transactions? （）(Choose all that apply)
A:Supplemental log must be enabled
B:Supplemental log must be enabled for the primary key
C:Undo retention guarantee for the database must be configured
D:”EXECUTE “ permission on the DBMS_FLASHBACK package must be granted to the user

出自：Oracle认证

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