A.數(shù)據(jù)傳輸加密B.將多個(gè)數(shù)據(jù)源或類型結(jié)合在一起C.數(shù)據(jù)模型設(shè)計(jì)D.增加數(shù)據(jù)存儲(chǔ)容量
A.數(shù)據(jù)傳輸加密B.分析和了解數(shù)據(jù)的特征、質(zhì)量和結(jié)構(gòu)C.數(shù)據(jù)模型設(shè)計(jì)D.增加數(shù)據(jù)備份
A.數(shù)據(jù)傳輸加密B.記錄數(shù)據(jù)的某一時(shí)刻狀態(tài)或版本C.數(shù)據(jù)模型設(shè)計(jì)D.增加數(shù)據(jù)存儲(chǔ)容量