MetadataOverviewDeckPPT课件下载推荐.ppt
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,IBM&
GavilanResearchAssociates2008MetadataSurvey287respondents,IBMandGavilan2008SurveyHighlights:
TurningyourDataintoInformationwithMetadata,WhatAreYourTopMetadataManagementIssues?
Respondentscouldchoosemultipleanswers,whichcreatedabroadspectrum.The“top5”metadatamanagementissuesin2008are:
documentingbusinessmetadata(businessrules&
elementdescriptions)-80.8%ofrespondentssupportforDataGovernanceandDataStewardship(67.5%ofrespondents)documentingaDataWarehouse,DataMart,orAnalyticalApplication(64.8%ofrespondents)supportforDataLineagereportingand/orDataMappinganalysis(64.9%)implementingacorporateDataDictionaryorDataGlossary(64.7%)RespondentComments:
“Mytopissueisgettingmetadataoutofexistingtoolsetsintoarepository,whereitcanbeaccessedandreportedon.”“ChangeManagementisourbiggestissue!
Howcouldyoumissthispoint?
”,Source:
IBM/GavilanResearchAssociates2008MetaDataMarketSurvey,InfoSphereInformationServerMetadataApproach,SowhatexactlyisMetadata?
Metadataenablesyoutoputcontextandmeaningtothings.Itisgeneratedandconsumedbyeveryorganizationandsoftwareproduct.,MetadataPrimerforBusiness,BusinessMetadataBusinessrules,Stewardship,BusinessDefinitions,AuditingTerminology,Glossaries,AlgorithmsandLineageusingbusinesslanguage.Audience:
Businessusers.TechnicalMetadataDefinesSourceandTargetsystems,theirTableandFieldsstructuresandattributes,DocumentationforAuditingDerivationsandDependencies.Audience:
SpecificToolUsersBI,ETL,Profiling,Modeling.OperationalMetadataInformationaboutapplicationruns:
theirfrequency,recordcounts,componentbycomponentanalysisandotherstatisticsforauditingpurposes.Audience:
Operations,ManagementandBusinessUsers.,B,T,O,Literally,“dataaboutdata”thatdescribesyourcompanysinformationfrombothabusinessandatechnicalperspective,MetaDataiswhatdescribes,defines,&
inter-relatesyourkeyinformationassets“SocialSecurityNumber:
auniqueidentificationnumberissuedtocitizens,permanentresidents,andtemporary(working)residentsbytheUSGovernment.”picXXX-XX-XXXX“ProfitAmount:
acurrencyvaluethatiscalculatedbycombiningdatafromtheCustomerMasterdatabaseandWholesaleInventoryapplications.”CalculationincludedonMonthlyReport,LetsputMetadatatoanExample,Supposeyouhavetheseitemsof“data”552-90-3456$233,567.00,Whatdataorinformationexists?
Whereisitbeingused?
Whatisitsbusinessdefinition?
Whatothernameshasitbeencalledorisbeingcalled?
Howisitinter-relatedtootherinformation?
Whoisusingit?
Whydoweneedit?
Whenwasitlastupdated?
Metadatahelpsanswerimportantquestionssuchas:
Whatis“ProfitAmount”?
Howisitdefined?
Howisitcalculated?
Whereisitstoredorused?
Isitreliable?
Accurate?
IfImakeachangeto“ProfitAmount”whatwillbeimpacted?
MetadataBusinessDriversWhatishappeningintheDataIntegrationMarketthatrequiresMetadata?
GovernanceandComplianceRegulationsareincreasingHowdoorganizationscomplyandmeetdocumentationrequirements?
Howcanorganizationsensureaccountabilityandresponsibility?
BusinessCompetitioncontinuestogrowHowdoorganizationsindividualizetheircustomerexperience?
Howcanorganizationsgetaccesstoinformationtomakecorrectdecisions?
CostsandsystemcomplexitiesareexpandingHowcanorganizationsdriveoptimizationwithintegration?
Howdoorganizationsmanagecomplexsoftwareenvironments?
IBMDataGovernanceMaturityModel-measurableresults,BusinessTransformation,13,1990,2008,FirstMetadataRepositoriesIBMDataDictionary,SingleEnterpriseRepositoryIBMledADCycle,DataWarehouseRepositoriesETL,DQ,DPe.g.AscentialMetastage,1980,2000,1970,2007,2002,FederatedRepositoriesAndRegistriese.g.UnicornUnderstandhowsoftwareanddataservicesrelatedtobusinessprocessesworkflows,andtherequirementtopublish,reuseandgoverntheseservices.,SteveBorn,MetadataConsolidationSolutions,CommunityFocusedRepositories,IBMbuysAscential,IBMbuysUnicorn,less-ambitiousmore-scopedmetadatamanagementsolutions,Consolidationtoce