鏡像數(shù)據(jù)庫是指本地數(shù)據(jù)檢索，檢索速度相對較快，但數(shù)據(jù)滯后；包庫數(shù)據(jù)庫是指遠程數(shù)據(jù)檢索，檢索速度相對較慢，但數(shù)據(jù)適時更新。...