数据仓库和olap
Datawarehousingandon-lineanalyticalprocessing(OLAP)areessentialelementsofdecisionsupport,whichhasincreasinglybecomeafocusofthedatabaseindustry.Manycommercialproductsandservicesarenowavailable,andalloftheprincipaldatabasemanagementsystemvendorsnowhaveofferingsintheseareas.Decisionsupport
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