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終端用戶 從操作型的現(xiàn)存系統(tǒng)到數(shù)據(jù)倉(cāng)庫(kù)中數(shù)據(jù)轉(zhuǎn)換工作的難點(diǎn) 概念 : 數(shù)據(jù)周期、簡(jiǎn)要記錄 數(shù)據(jù)倉(cāng)庫(kù)的建模 Vendor data Vendor data Vendor data vendor_id 供應(yīng)商 cust_id 客戶 order_id 發(fā)貨 Order data Order data order_id 訂單 Cust data Cust data Cust data Nonkey data Order data Order data Order data 產(chǎn)品 Product data Product data Product data Product id Vendor id Nonkey data cust id Nonkey data order id Nonkey data product id 數(shù)據(jù)建模的十條