{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "$anchor": "cdm.base.datetime",
  "type": "object",
  "title": "Period",
  "description": "A class to define recurring periods or time offsets.",
  "properties": {
    "periodMultiplier": {
      "description": "A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.",
      "type": "integer"
    },
    "period": {
      "description": "A time period, e.g. a day, week, month or year of the stream. If the periodMultiplier value is 0 (zero) then period must contain the value D (day).",
      "$ref": "cdm-base-datetime-PeriodEnum.schema.json"
    }
  },
  "required": [
    "periodMultiplier",
    "period"
  ]
}