Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?（）

单项选择题Which of the following privileges permits a user to update the comment on a sequence?（）

A.CONTROL
B.UPDATE
C.USAGE
D.ALTER

单项选择题Which of the following statements is used to prevent user TOM from adding and deleting data in table TAB1?（）

A.REVOKE ADD, DELETE FROM USER tom ON TABLE tab1
B.REVOKE ADD, DELETE ON TABLE tab1 FROM USER tom
C.REVOKE INSERT, DELETE FROM USER tom ON TABLE tab1
D.REVOKE INSERT, DELETE ON TABLE tab1 FROM USER tom

单项选择题A user invoking a user-defined function requires which DB2 privilege?（）

A.CALL
B.USAGE
C.EXECUTE
D.REFERENCES