{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "$anchor": "cdm.base.math",
  "type": "object",
  "title": "Measure",
  "description": "Defines a concrete measure as a single number associated to a unit. It extends MeasureBase by requiring a single value attribute to be present. A measure may be unit-less so the unit attribute is still optional.",
  "properties": {
    "value": {
      "description": "The initial rate or amount, as the case may be. An initial rate of 5% would be represented as 0.05.",
      "type": "number"
    },
    "datedValue": {
      "description": "The schedule of step date and value pairs. On each step date the associated step value becomes effective. A list of steps may be ordered in the document by ascending step date. An FpML document containing an unordered list of steps is still regarded as a conformant document.",
      "type": "array",
      "items": {
        "$ref": "cdm-base-math-DatedValue.schema.json"
      },
      "minItems": 0
    },
    "unit": {
      "description": "Qualifies the unit by which the amount is measured. Optional because a measure may be unit-less (e.g. when representing a ratio between amounts in the same unit).",
      "$ref": "cdm-base-math-UnitType.schema.json"
    },
    "value": {
      "description": "The value attribute must be present in a concrete measure.",
      "type": "number"
    },
    "datedValue": {
      "description": "The schedule of step date and value pairs must be absent.",
      "type": "array",
      "items": {
        "$ref": "cdm-base-math-DatedValue.schema.json"
      },
      "minItems": 0
    }
  },
  "required": [
    "value"
  ]
}