CortezDeveloper/cohort-tools-project

// student
{
  _id: 8765
 name: 'bob',
 cohort: {
  _id: 1234
  startDate: "1990-01-01",
  campus: "paris"
}
}
// cohort
{
  _id: 1234
  startDate: "1990-01-01",
  campus: "paris"
}