数据仓库专业术语表

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1、数据仓库专业术语表AAccessPathThepathchosenbyadatabasemanagementsystemtoretrievetherequesteddata.AccessProviderAcompanywhichprovidesitscustomersaservicewherebytheycanaccesstheInternet.Theusernormallyconnectstotheaccessprovider’scomputerviaamodemusingadialupconnection.ActiveAttackApersistentsecurityas

2、saultbysomeonetryingtogainrestrictedaccessbyalteringdata.Therearemultipletechniques,decryptionforexample,whichcanbeusedtoleadtheattack.ActiveServerPages(ASP)ActiveserverpagesareasetofsoftwarecomponentsthatrunonaWebserverandallowWebdeveloperstobuilddynamicWebpages.Activity-BasedCosting(ABC)A

3、ctivity-basedcosting(ABC)isaninformationsystemthatmaintainsandprocessesdataonafirm'sactivitiesandproducts.Itidentifiestheactivitiesperformed,tracescosttotheseactivities,andthenusesvariouscostdriverstotracethecostofactivitiestoproducts.88Activity-BasedManagement(ABM)Activity-basedmanagement(

4、ABM)istheuseoftheactivity-basedcostingtoolbyprocessownerstocontrolandimprovetheiroperations.Becauseprocessanalysisisconductedinthebuildingofanactivity-basedcostmodel,managementknowsitsbusinessmuchbetterandcanconsequentlyevaluatevalue-addedandnon-value-addedactivities.Becauseacertainvolumeof

5、workproducesacertainoutcome,"Whatif"analysiscanbeconductedtodeterminewhatresourcesarerequiredofoperationsarescaledbackorexpanded.AdClicksAlsocalledclickthroughs.Thenumberoftimesauser"clicks"onanonlinead,oftenmeasuredasafunctionoftime("adclicksperday").AdHocQueryAnyquerythatcannotbedetermine

6、dpriortothemomentthequeryisissued.AquerythatconsistsofdynamicallyconstructedSQL,whichisusuallyconstructedbydesktop-residentquerytools.AdHocQueryToolAnend-usertoolthatacceptsanEnglish-likeorpoint-and-clickrequestfordataandconstructsanad-hocquerytoretrievethedesiredresult.AdministrativeDataIn

7、adatawarehouse,thedatathathelpsawarehouseadministratormanagethewarehouse.Examplesofadministrativedataareuserprofilesandorderhistorydata.88AggregateDataDatathatistheresultofapplyingaprocesstocombinedataelements.Datathatistakencollectivelyorinsummaryform.A