{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "$anchor": "cdm.base.datetime",
  "type": "object",
  "title": "PeriodRange",
  "description": "Indicates The period range defined as either a lower and upper period bound, or both.",
  "properties": {
    "lowerBound": {
      "description": "Specifies the lower bound of a period range, e.g. greater than or equal to 5Y.",
      "$ref": "cdm-base-datetime-PeriodBound.schema.json"
    },
    "upperBound": {
      "description": "Specifies the upper bound of a period range, e.g. less than to 10Y.",
      "$ref": "cdm-base-datetime-PeriodBound.schema.json"
    }
  }
}