Oracle OCP 19c 认证1Z0-082考试题库(第18题)CUUG整理
Oracle OCP 19c 认证1Z0-082考试题库(第18题)-CUUG内部学员版082题库解析18、Evaluate the following ALTER TABLEstatement:ALTER TABLE orders SET UNUSED (order_date);Which statement is true?A. After executing the ALTER TABLEcommand, you can add a new column called ORDER_DATE to the ORDERS table.B. The ORDER_DATE column should be empty for the ALTER TABLE command to execute succsessfully.C. ROLLBACK can be used to get back the ORDER_DATE column in the ORDERStable.D. The DESCRIBE command would still display the ORDER_DATE column.
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