单选题Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）A Because row IDs may change during the flashback operationB Because the object number changes af
题目
单选题
Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）
A
Because row IDs may change during the flashback operation
B
Because the object number changes after the flashback operation
C
Because the rows are retrieved from the recycle bin during the flashback operation
D
Because the table is moved forward and back to a temporary during the flashback opertion