옷 administrator «include»> load inventory data) «include»>- «>>>save inventory data «extend>> «extend» phone or
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옷 administrator «include»> load inventory data) «include»>- «<include>>>>save inventory data «extend>> «extend» phone order walk-in sale 옷 옷 telephone operator sales clerk The figure above is a use case diagram, please draw a class diagram from it. Please refer to Chapter 8 of the unified modeling language user guide. run inventory reports update inventory «include>>> sale verify credit card Extension Points: sale is a credit card purchase verify check Extension Points: sale is a check purchase