{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/imf/refs/heads/main/json-schema/data-structure.json",
  "title": "DataStructure",
  "description": "Data structure definition (DSD) for an IMF SDMX dataset",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Data structure definition identifier",
      "examples": ["DSD_GFS", "DSD_IFS", "DSD_FM"]
    },
    "agencyID": {
      "type": "string",
      "description": "Owning agency identifier",
      "examples": ["IMF.STA", "IMF"]
    },
    "dataStructureComponents": {
      "type": "object",
      "description": "Components making up the data structure",
      "properties": {
        "dimensionList": {
          "type": "object",
          "description": "List of dimensions defining the key",
          "properties": {
            "dimensions": {
              "type": "array",
              "description": "Regular dimensions",
              "items": {
                "$ref": "#/$defs/Dimension"
              }
            },
            "timeDimensions": {
              "type": "array",
              "description": "Time dimensions",
              "items": {
                "$ref": "#/$defs/Dimension"
              }
            }
          }
        },
        "measureList": {
          "type": "object",
          "description": "List of measures (observation values)",
          "properties": {
            "measures": {
              "type": "array",
              "items": {
                "$ref": "#/$defs/Dimension"
              }
            }
          }
        },
        "attributeList": {
          "type": "object",
          "description": "List of attributes attached to data"
        }
      }
    }
  },
  "$defs": {
    "Dimension": {
      "type": "object",
      "description": "A dimension, measure, or attribute in the data structure",
      "properties": {
        "id": {
          "type": "string",
          "description": "Dimension identifier",
          "examples": ["COUNTRY", "FREQUENCY", "TIME_PERIOD", "OBS_VALUE"]
        },
        "position": {
          "type": "integer",
          "description": "Position in the dot-separated key string (1-indexed)",
          "minimum": 1,
          "examples": [1, 2, 3]
        },
        "type": {
          "type": "string",
          "description": "Dimension classification",
          "enum": ["Dimension", "TimeDimension", "Measure"]
        },
        "conceptIdentity": {
          "type": "string",
          "description": "URN reference to the concept definition"
        },
        "localRepresentation": {
          "type": "object",
          "description": "Codelist or format constraining this dimension"
        }
      },
      "required": ["id"]
    }
  },
  "required": ["id", "agencyID"]
}