Please complete the system modeling tasks according to the function description of " Student Achievement Management System " . " Student score Management system ' mainly includes the following functions : The administrator through the system management interface to enter , add , delete , modify course information ; Add , delete and modify teacher information ; Add , delete and modify student information . After logging into the system , teachers can record their own students ' scores . Students can check their course scores after logging in to the system . Use UML and Rational Rose tools to model the system : 2. According to the use case model , carry on the static modeling , describe the analysis process , draw the system class diagram and package diagram

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