A.數(shù)據(jù)冗余 B.列值重復(fù)且內(nèi)涵 C.更新異常 D.插入異常
A.重做日志切換 B.執(zhí)行UPDATE語(yǔ)句 C.執(zhí)行INSERT D.SMON合并表空間中的碎片
A.sqlldr username/password control=data_file B.sqlldr username/password rows=128control=data_file C.sqlldr username/password control=data_filerows=64 D.sqlldr username/password control=data_file.ctl