Oracle OCP 19c 认证1Z0-082考试题库(第19题)CUUG整理
Oracle OCP 19c 认证1Z0-082考试题库(第19题)-CUUG内部学员版082题库解析19、choose the best answer Evaluate the following SQL statement:ALTER TABLE hr.empSET UNUSED (mgr_id);Which statement is true regarding the effect of the above SQL statement?A) Any views created on the EMP table that include the MGR_ID column would be automatically modified and remain valid.B) Any constraints defined on the MGR_ID column would be removed by the above command.C) Any synonym existing on the EMP table would have to be re-created.D) Any index created on the MGR in column would continue to exist until the DROP UNUSED COLUMNS command is executed.
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