A.數(shù)據(jù)庫是記錄數(shù)據(jù)的流水賬，數(shù)據(jù)倉庫需要對數(shù)據(jù)庫中的數(shù)據(jù)進(jìn)行抽取、清洗、轉(zhuǎn)換等
B.數(shù)據(jù)倉庫源數(shù)據(jù)在原數(shù)據(jù)庫中有可能有重復(fù)或不一致之處，必須將這些數(shù)據(jù)轉(zhuǎn)換成全局統(tǒng)一的定義
C.數(shù)據(jù)提取的周期決定了動(dòng)畫間隔的時(shí)間，數(shù)據(jù)提取的周期越短，則動(dòng)畫的速度越慢
D.數(shù)據(jù)倉庫的數(shù)據(jù)主要供企業(yè)領(lǐng)導(dǎo)者決策分析之用，所涉及的數(shù)據(jù)操作主要是數(shù)據(jù)查詢、分析和修改