title: NoSQL big data implementation/saving
body: <p>Lets say I have the following entities:</p>
  
  <pre><code>Student (Name, Courses, Department, Grades, Age, Gender, Address, Schedule)
  Course (Name,  Schedule, MaxStudent, EligibleStudents, Department, PreRequisite, CoRequisite)
  Department (Name, NumberOfStudents)
  Grades (Course, Value)
  </code></pre>
  
  <p>These are linked data. How should I save them in NoSQL?
  I heard that joins are not encourage in NOSQL...</p>