Acceleratedanalysisapproachesemphasizetheconstructionof()tomorerapidlyidentifybusinessanduserrequirementsforanewsystem.Asanacceleratedanalysistechnology，()readstheprogramcodeandautomaticallygeneratestheequivalentsystemmodel，andthecodecanbeobtainedfrom(请作答此空).Allsystemanalysisapproachesrequiresomeformof()whichincludesthosetechniquestobeusedtoidentifyorextractsystemproblemsandsolutionrequirementsfromusercommunity.()isaclassicalsetoftechniquesusedtocollectinformationaboutsystemproblems，opportunities，solutionrequirements，andpriorities.
A.existing database and application program B.application program and user interface C.existing database and user interface D.existing database，application program and user interface正确答案D
