{
  "fields": [
    {
      "name": "postcode",
      "type": "string",
      "title": "Postcode",
      "description": "Postcode of the mother's usual residence. Kept as text."
    },
    {
      "name": "births_registered",
      "type": "integer",
      "title": "Transactions"
    }
  ],
  "missingValues": [
    ""
  ],
  "primaryKey": [
    "postcode"
  ]
}