{
  "version": "1.0.0",
  "last_updated": "2025-06-22T17:55:07.055211",
  "fields": [
    {
      "name": "geographic_id",
      "type": "string",
      "description": "Australian Statistical Geography Standard (ASGS) SA2 identifier",
      "example": "101021001",
      "constraints": {
        "pattern": "^[0-9]{9}$"
      }
    },
    {
      "name": "geographic_name",
      "type": "string",
      "description": "Human-readable name of the SA2 area",
      "example": "Sydney - Haymarket - The Rocks"
    },
    {
      "name": "life_expectancy_years",
      "type": "float",
      "description": "Life expectancy at birth in years",
      "example": 82.5,
      "constraints": {
        "min": 60,
        "max": 100
      }
    },
    {
      "name": "smoking_prevalence_percent",
      "type": "float",
      "description": "Percentage of population who smoke regularly",
      "example": 14.2,
      "constraints": {
        "min": 0,
        "max": 100
      }
    }
  ]
}