()analysisemphasizesthedrawingofpictorialsystemmodelstodocumentandvalidatebothexistingand/orproposedsystems.Ultimately,thesystemmodelsbecomethe()fordesigningandconstructinganimprovedsystem.()issuchatechnique.Theemphasisinthistechniqueisprocess-centered.Systemsanalystsdrawaseriesofprocessmodelscalled()、(请作答此空)isanothersuchtechniquethatintegratesdataandprocessconcernsintoconstructscalledobjects.
A.Structured analysis B.Information Engineering C.Discovery Prototyping D.Object-Oriented analysis正确答案D
