1. Use case diagram 2. Four scenario (1) Student input course id and get information of this course successfully. (2) Student query its curriculum and get it successfully. (3) Student input course id but session overdue and he fails. (4) Student input course id but there doesn’t exist such course and he fails. 3. Sequence diagram and Collaboration diagram 

Figure1Sequencediagramofscenario1 Figure2Collabrationdiagramofscenario1 

Figure3Sequencediagramofscenario2 Figure4Collabrationdiagramofscenario3 

Figure5Sequencediagramofscenario3 Figure6Collabrationdiagramofscenario3 

Figure7Sequencediagramofscenario4 Figure8Collabrationdiagramofscenario4