app.js

// Update or edit
app.post('api/course/:id', (req,res) => {
  // check the course if it exist
  // if not existing, return a 404 status.
  
  //validate
  // if invalid, return 404 -bad request
  
  //update course
  // return the updated course 
})

// delete
app.delete('api/course/:id', (req,res) => {
  //check the course if it exist
  // if not existing, return a 404 status.
  
  //delete
  
  //return the same course
})