Manyoftheactivitiesperformedduringthepreliminaryinvestigationarestillbeingconductedin(),butinmuchgreaterdepththanbefore.Duringthisphase,theanalystmustbecomefullyawareofthe(2)andmustdevelopenoughknowledgeaboutthe()andtheexistingsystemstoenableaneffectivesolutiontobeproposedandimplemented.Besidesthe()forprocessanddataofcurrentsystem,thedeliverablefromthisphasealsoincludesthe()fortheproposedsystem. (2)应选()。 A.mainsymptom
A.root problem B.final blueprint D.ata specification正确答案C
