Possible field types:

• string
• number
  • integer - whole number
  • float, decimal - number with possible fractional part
• boolean - true or false
• date - string representing date in ISO-8601 format (YYYY-MM-DD)
• time - string representing time of day in 24-hour format (HH:MM)
• date and time - string representing time at date in ISO-8601 format (YYYY-MM-DD HH:MM)
• enumeration - string value chosen from finite set, see Standard enumerated columns