An interval of time that recurs periodically. Periodic intervals have two properties, phase and period. The phase specifies the "interval prototype" that is repeated every period.
PIVL_TS: PeriodicIntervalOfTime (V3 Data Type)
A quantity specifying a point on the axis of natural time. A point in time is most often represented as a calendar expression.
If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.
A code specifying whether the set component is included (union) or excluded (set-difference) from the set, or other set operations with the current set component and the set as constructed from the representation stream up to the current point.
A prototype of the repeating interval, specifying the duration of each occurrence and anchors the periodic interval sequence at a certain point in time.
A time duration specifying as a reciprocal measure of the frequency at which the periodic interval repeats.
Specifies if and how the repetitions are aligned to the cycles of the underlying calendar (e.g., to distinguish every 30 days from "the 5th of every month".) A non-aligned periodic interval recurs independently from the calendar. An aligned periodic interval is synchronized with the calendar.
Indicates whether the exact timing is up to the party executing the schedule (e.g., to distinguish "every 8 hours" from "3 times a day".)