單項(xiàng)選擇題

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

A.REVOKE ALL PRIVILEGES FROM USER tom
B.REVOKE ALL ON EMPLOYEE FROM USER tom
C.REVOKE EXECUTE ON EMPLOYEE FROM USER tom
D.REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom

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單項(xiàng)選擇題

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

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

單項(xiàng)選擇題

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