One To Many Relation output an array

Hi

I have the folowing database :

and I am trying to get the sections with their corresponding department and directorate, the output is the following

{
  "sections": [
    {
      "ID": "1",
      "NAME": "section1",
      "DEPARTMENT_ID": "1",
      "departments": [
        {
          "ID": "1",
          "NAME": "depart 1",
          "DIRECTORATE_ID": "1",
          "directorates": [
            {
              "ID": "1",
              "NAME": "directorate1",
              "PHONE_NUMBER": "123",
              "ROOM_NUMBER": "123"
            }
          ],
          "EDL_ID": "65",
          "PHONE_NUMBER": "659",
          "ROOM_NUMBER": "987"
        }
      ],
      "PHONE_NUMBER": "654",
      "ROOM_NUMBER": "865"
    }
  ]
}

I think it will be better if the departments returned for the section is not an array, it can be directly the department object? a section has a department. and the same for the directorate in the department.

What do you think about this?

Thank you

test.txt