decis routin critic param dm uml entiti check param dsgr futur develop ignor problem predic object dm design dsgr model facad state vertex dm problem object sv state vertex dm model facad state sv object sm model facad state machin sv sm model facad sm sv problem model facad pseudost sv object model facad kind sv equal model pseudost kind choic problem equal model pseudost kind junction problem collect incom model facad incom sv need incom incom incom size model facad pseudost sv model facad kind sv equal model pseudost kind initi need incom need incom problem problem 