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1、附录4外文译文外文原文Inmanyorganizations,databasedevelopmentfromthebeginningofenterprisedatamodeling,datamodelingenterprisesdeterminethescopeofthedatabaseandthegeneralcontent.Thisstepusuallyoccursinanorganization'sinformationsystemplanningprocess,itaimstohelporganizati
2、onscreateanoveralldatadescriptionorexplanation,andnotthedesignofaspecificdatabase.Aspecificdatabaseforoneormoreinformationsystemsprovidedataandthecorporatedatamodel(whichmayinvolveanumberofdatabases)describedbytheorganizationmaintainingthescopeofthedata.Datam
3、odelingintheenterprise,youreviewofthecurrentsystem,theneedtosupportanalysisofthenatureofthebusinessareas,theneedforfurtherdescriptionoftheabstractdata,andplanningoneormoredatabasedevelopmentproject.Figure1showsPineValleyfurniturecompany'senterprisedatamodelof
4、apart.1.1InformationSystemArchitectureAsshowninfigure1,seniordatamodelisonlygeneralinformationsystemarchitecture(ISA)orapartofanorganization'sinformationsystemblueprint.Intheinformationsystemplanning,youcanbuildanenterprisedatamodelasawholeinformationsystemar
5、chitecturepart.AccordingtoZachman(1987),SowaandZachman(1992)viewsofaninformationsystemarchitectureconsistsofthefollowingsixkeycomponents:Data(Figure1shows,butthereareothermethodsthat).Manipulationofdataprocessing(ofadataflowdiagramcanbeused,withtheobjectmodel
6、methods,orothersymbolsthat).Networks,whichorganizationsandinorganizationswithitsmaintransmissionofdatabetweenbusinesspartners(itcanconnectthroughthenetworktopologymapandtodemonstrate).Peoplewhodealwiththeimplementationofdataandinformationandis附录4外文译文thesource
7、andreceiver(intheprocessmodelforthedatashowsthatthesenderandthereceiver).Implementationoftheeventsandtimepoints(theycanusestatetransitiondiagramandothermeans.)Thereasonsfortheincidentanddataprocessingrules(oftenintheformoftextdisplay,buttherearealsoanumberofc
8、hartsfortheplanningtoolssuchasdecisiontables).1.2InformationEngineeringInformationsystemsplannersinaccordancewiththespecificinformationsystemplanningmethodsdevelopedinformationsystemarchi
