Which of the following statements best describes Flashback Versions Query？（） <br>A: Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.<br>B: Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.<br>C: Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.<br>D: Flashback Versions Query is used to view all version changes on rows that existed between two points in time.

Which of the following statements best describes Flashback Versions Query？（）
A: Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.
B: Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.
C: Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.
D: Flashback Versions Query is used to view all version changes on rows that existed between two points in time.

出自：Oracle认证

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