ATscale：语义层在数据和分析中的应用实践指南（英文版）（26页）.pdf

1、How to use a semantic layer for data and analyticsA Practical GuideTable of Contents3 Introduction:What is a Semantic Layer?4 Where the Semantic Layer Fits5TrendsDrivingtheNeedforaSemanticLayer6TopChallengesaSemanticLayerSolves12IndustryUseCasesforaSemanticLayer17ConsiderationsforChoosingaSemanticLa

2、yer21AFrameworkforEvaluatingSemanticLayerSolutions23AtScaleCloudDataPerformanceBenchmarks25MakingaBusinessCaseforaSemanticLayer26LearnMore3A Practical Guide to Using a Semantic Layer Youmayhaveheardthetermsemanticlayerbefore;itsbeenaroundforsometime.Peopleinventedsemanticlayerstomoldrelationaldataba

3、sesandtheirSQLdialectsintoanapproachableInterfaceforbusinessusers.In1992,BusinessObjectspatentedthetermandformalizedtheirimplementationastheBusinessObjectsUniverseTM.Fromthatpointon,theconceptofmeasureanddimensionsasanabstractionofSQLhasbecomethepreferredlanguageforbusinessusers.Introduction:What is

4、 a Semantic Layer?PrimaryReasonstoAdoptaSemantic Layer Establishasinglesourceofbusiness-vettedmetricsandanalysisdimensions.Ensure data consumers can access governeddatawithtoolsoftheirchoice.Ensureperformantaccesstodataincludingsummarystatistics.Keepcostslowbymanagingcloudinfrastructuresmartlyandkee

5、pingmanagementandadministrationsimpleLetslearnmore!Untilrecently,however,thesemanticlayer was always closely tied to a businessintelligence(BI)platform.AslongasenterprisesremainedwithintheconfinesoftheirBIvendorofchoice,everythingworkedwell.Today,therearemorewaysthanevertoanalyzedata.Longgonearethed

6、ayswheretherewasoneBIplatformtoruleall.Tightlycouplingasemanticlayertoone analytics consumption style no longermakessense.Toexpandonthat,theexplosionofself-serviceBIhasfreedbusinessusersfromrelyingonIT-preparedanalytics,butattheexpenseofdataconsistencyandtrustinanalyticsoutput.Businessdefinitionsand