上克通大￥2.3 Model Transformation Example SHANGHAI JIAO TONG UNIVERSITY Object design model before transformation LeagueOwner Advertiser Player +email:Address email:Address +emai1 Address Object design model after transformation: User +email:Address LeagueOwner Advertiser Player Software EngineeringSoftware Engineering 2.3 Model Transformation Example Object design model before transformation Object design model after transformation: Advertiser +email:Address Player +email:Address LeagueOwner +email:Address LeagueOwner Advertiser Player User +email:Address