数据仓库的概念(编辑修改稿)

数据仓库的概念(编辑修改稿)内容摘要：

uarter Year Time Territory District Region Building/Estate Geographic Location Type Size Area Housing Types 步骤 4: 确定维表删除不必要的表 Code_no No_of_transaction Constructor_ID Developer_ID Building date Purchase date Purchase price Address Area Apartment Code_no Transaction_no Name/Company HKID Contact Phone Contact Address Purchase Date Purchase Price Owner Code_no Flat Transaction_no Name HKID Occupy_type (P,R) Contact Phone Contact Address Date Price Occupant Contractor_ID Company Name Address Contact 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 步骤 5: 建立层次结构 Date 1Jan94 13Jun95 12Jan96 12Apr96 15Apr96 20Oct96 20Oct96 12Dec96 1Jan97 31Mar97 15Apr97 ?. Time Year Quarter Month Day Time Hierarchy 步骤 6: 确定属性 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。 Commercial Others/Misc。