When a transaction modifies the database, Oracle copies the original data before modifying it. The original copy of the modified data is called
A. Undone Data
B. Archive Data
C. Redo Data
D. Undo Data
Answer:A
When a transaction modifies the database, Oracle copies the original data before modifying it. The original copy of the modified data is called
A. Undone Data B. Archive Data C. Redo Data D. Undo Data