Jay's Done

Till now, all good on my Mac. I need to execute on Windows to ensure
everything works fine. I’ve made the following modifications:
1. I modified my Student_Profile frame;
2. I added a file in sql package to get and set student information
3. There is a little bug in model.Student, I corrected.
If you face any conflict in CreateDB, please ignore my modification.
Otherwise, please accept my other conflicts. I didn’t modify the other
files.