Which two statements are true about standard database auditing（）
A. DDL statements can be audited.
B. Statements that refer to stand-alone procedure can be audited.
C. Operations by the users logged on as SYSDBA cannot be audited.
D. Only one audit record is ever created for a session per audited statement even though it is executedmore than once.
微信支付 
支付宝支付