Designation:E2145−07(Reapproved2013)AnAmericanNationalStandardStandardPracticeforInformationModeling1ThisstandardisissuedunderthefixeddesignationE2145;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Informationmodelsareincreasinglyimportantintheanalysis,design,andsharingacommonunderstandingininformationengineering,inbusinessprocessimprovement,inbuildinginformationsystems,indevelopinginformaticsstandards,andinmanyotheruses.21.2Thepurposeofthispracticeistoidentifybestpracticesforthecreation,use,andassessmentofvarioustypesofinformationmodels.1.3Includedinthispracticearerecommendedorganiza-tionalpoliciesandprocedures,wheremodelingisbestusedandrecommendedmodelingmethods,bestpracticesandevalu-ationcriteria.1.4Excludedfromthispracticearedetailedspecificationsofmodelingtechniquesthatarespecifiedordescribedinothersources.2.ReferencedDocuments2.1ANSIStandards:3ANSIX3.172-1990DictionaryforInformationSystemsIEEE1320.1-1998StandardforFunctionalModelingLanguage—SyntaxandSemanticsforIDEF0IEEE1320.2-1998StandardforFunctionalModelingLanguage—SyntaxandSemanticsforIDEF1X(Object97)2.2ISOStandards:3ISO8601-88DataElementsandInterchangeFormats—RepresentationofDatesandTimesISO/IEC1087TerminologyWork—Vocabulary-Part1:TheoryandApplicationISO/IEC11179InformationTechnology—SpecificationandStandardizationofDataElements,Parts1-6ISO/IEC19501:2005Informationtechnology—OpenDis-tributedProcessing—UnifiedModelingLanguage(UML)Version1.4.2ISO/IEC2382InformationProcessingSystems—Vocabulary2.3OtherDocumentsandStandards:4UnifiedModelingLanguageSpecificationversion1.5,March20033.Terminology3.1Thefollowingsectionspresentterms,definitions,andacronymsfoundinthispracticeandinvariousmodelingactivities.ThesetermsanddefinitionsarereferencedorderivedfromANSIX3.172orISO/IEC2382unlessothe...
