Unloading Data Using the ORACLE_DATAPUMP Access Driver【每日一译】--20121225
Tounloaddata,youusetheORACLE_DATAPUMPaccessdriver.Thedatastreamthatisunloadedisinaproprietaryformatandcontainsallthecolumndataforeveryrowbeingunloaded.Anunloadoperationalsocreatesametadatastreamthatde