校园小商品交易系统 :本系统的设计模式模拟是校园小商品交易系统商品情况，经过充分地系统调研，发现本系统应包括商品信息，用户（包括顾客信息，管理员），商家信息和商品订购信息-Campus Commodity Trading System: The system design is simulated campus Commodity commodity trading system, the system after a full investigation and found that the system should include the commodity information, the user (including customer information, the administrator), business information and merchandise ordering information