信息系统分析与设计(第五讲)

¾¾“”¾¾¾“”¾“”„„„—DFD2.S37P0P1P2P4P3™™™™„„„1-101101S-NoXXXXXXX2-03008[]1000*3-05005P2.1,P2.2200/*4-02D2*P2.1.1D2D2P2.1.2D2P2.1.4*D2P2.1.3D2P2.1.5150/IFCustomerdoesmorethan$50000businessTHENIFthecustomerwasn’tindebttousthelast3monthsTHENdiscountis15ELSE(wasindebttous)IFcustomerhasbeenwithusformorethan10yearsTHENdiscountis10ELSE(10yearOrless)sodiscountis5ELSE(customerdoes$50000ORLess)sodiscountinnil5315%1010%5%15%51010%105%50%DFD