three entity : student ,teacher,task
relationship: teacher to student , one to many; teacher to task,many to many
the business process is sample,like this:

first, every student must have a teacher, this is easy to be done with hibernate
student_id teacher_id
student_a teacher_a
stundet_b teacher_a
stundet_c teacher_b

then teacher need to publish a task,and add a score to the task ,this can be done by create a middle table entity with hibernate,alao can be done easily
teacher_id task_id score
teacher_a task_a 10
teacher_a task_b 5
teacher_b task_a 6

finally,the student must finish the task their teacher publish, because what task student should do is actually decided by those two relationship above，now need a fact table to record the progress of each task belong to student,like this:
student_id teacher_id task_id score progress
student_a teacher_a task_a 10 75%
student_a teacher_a task_b 5 10%
student_b teacher_a task_a 10 22%
student_b teacher_a task_b 5 11%
student_c teacher_b task_a 6 7%

now the problem is coming, I don't know how to create this fact table use hibernate,the solution I hope that is once I make sure the relationship,this fact table can be generated autolly,I was a new learner of hibernate,please give me the core and explain as detailier as possible，thanks