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ct Phone Constructor Code_no Flat No_of_trans Type Floor Area (Building) Area (Actual) Flat Details Developer_ID Company Name Address Contact Phone Developer Day Month Quarter Year Time Territory District Region Building/Estate Geographic Location Type Size Area Housing Types 步驟 5: 建立層次結(jié)構(gòu) Date 1Jan94 13Jun95 12Jan96 12Apr96 15Apr96 20Oct96 20Oct96 12Dec96 1Jan97 31Mar97 15Apr97 ?. Time Year Quarter Month Day Time Hierarchy 步驟 6: 確定屬性 Class S S M M M L L L S M L S M Area sq. m Over 200 Over 300 Size A B C D E Type Domestic Industrial Shops amp。Xu Xin Presales Consultant Oracle (China) Co.,Ltd. 數(shù)據(jù)倉(cāng)庫(kù)的概念 What is... ? 數(shù)據(jù)倉(cāng)庫(kù) ( Data Warehouse ) / 數(shù)據(jù)集市 ( Data Mart ) ? 決策支持系統(tǒng) ( Decision Support System ) ? 聯(lián)機(jī)分析處理 ( OLAP ) / ROLAP / MOLAP ? 元數(shù)據(jù) ( Meta Data ) ? 分析指標(biāo) ( Measure ) / 維 ( Dimension ) ? 星型模型 ( Star Schema ) / 雪花模型 ( Snow Schema ) ? 數(shù)據(jù)鉆入 / 數(shù)據(jù)鉆出 ( Drill Down / Drill Up ) ? 表旋轉(zhuǎn) ( Table Rotation ) ? 數(shù)據(jù)挖掘 ( Data Mining ) 數(shù)據(jù)倉(cāng)庫(kù)幾大功能 ? Query/Report ? Drill up/ Drill Down ? Compare ? Exception ? Forcast, Whatif ? Data Mining 數(shù)據(jù)倉(cāng)庫(kù)實(shí)施方法 建立數(shù)據(jù)倉(cāng)庫(kù)需要考慮的因素 ? 擴(kuò)展性 ? 靈活性 ? 集成性 ? 可靠性 數(shù)據(jù)倉(cāng)庫(kù)專家的建議 ? 需要業(yè)務(wù)人員的積極參與 ? 通過(guò)原型設(shè)計(jì)驗(yàn)證需