国科大数据挖掘刘莹第一次作业

1.Supposethatadatawarehouseconsistsoffourdimensions,date,spectator,location,andgame,andtwomeasures,countandcharge,wherechargeisthefarethataspectatorpayswhenwatchingagameonagivendate.Spectatorsmaybestudents,adults,orseniors,witheachcategoryhavingitsownchargerate.(a)Drawastarschem