User A executes the following command to drop a large table in your database： SQL> DROP TABLE trans； 
While the drop table operation is in progress， user B executes the following command on the same table： SQL> DELETE FROM trans WHERE tr_type=’SL’； 
Which statement is true regarding the DELETE command（）

You suspect unauthorized data manipulation language （DML） operations on a particular table. Youwant to track users who are performing the transactions and the values used in the transactions. You alsoplan to transfer these values to another table for analysis. 
How would you achieve this（）