DMN12 — Type should be specified for date, time and duration properties

Table 53 defines the properties for different types. But the types of the properties are not specified.

Specification should be as listed here:

• for date
  • year, month, day (all of type number)
• for date and time
  • year, month, day, hour, minute, second (all of type number)
  • time offset (type days and time duration)
  • timezone (type string)
• for time
  • hour, minute, second (all of type number)
  • time offset (type days and time duration)
  • timezone (type string)
• for years and months duration
  • years, month (all of type number)
• for days and time duration
  • days, hours, minutes, seconds (all of type number)

add type and normalize into 2 tables

See attached proposal.