How to dorp data with all uid?

Users Dgraph
1

Dop all data but uid are not deleted. Can anyone help me ?

3

That’s like this by design. You won’t delete UIDs cuz it is part of the system. Just ignore it. It does not harm.

4 
When run the query i did not the deleted value of vidoes  give me solutions sir
Query:
{
  exams(func: type(MtcCategory),orderasc:mtc_category_serial)   {
    uid
    mtc_category_serial
    mtc_category_name
    video:~mtc_category_follows  {
			uid
    mtc_video_title
      mtc_video_duration
    mtc_video_description
    mtc_video_thumbnail_url
    mtc_subject_follows {
			uid
      subject_name
    }
  }
  }
}

Response:
"exams": [
      {
        "uid": "0xf58c10b8d",
        "mtc_category_serial": 1,
        "mtc_category_name": "IBA DU Admission Classes",
        "video": [
          {
            "uid": "0xf58c10e27",
            "mtc_video_title": "IBA BBA Orientation MasterClass",
            "mtc_video_duration": "99:00",
            "mtc_video_description": "Hear from IBA DU Alumni as they tell you how to prepare for BBA Admission programs across the many public and private universities of our country.",
            "mtc_subject_follows": [
              {
                "uid": "0xf58c10de5",
                "subject_name": "Orientation Class"
              }
            ]
          },
          {
            "uid": "0xf58c10fde",
            "mtc_video_title": "Test",
            "mtc_video_duration": "99:99",
            "mtc_video_description": "Test",
            "mtc_subject_follows": [
              {
                "uid": "0xf58c10de5",
                "subject_name": "Orientation Class"
              }
            ]
          }
        ]