Amount of time between two time points. Can be defined as start and duration or as start and end or as end and duration. When two attributes are specified the third is derived from them.

Supertypes

Subtypes

Positive period duration in ISO-8601 durations format. E.g. P1M for one month or P20D for 20 days.

Type Duration
Cardinality 0..1
Changeable true
Derived false

Period end.

Type Temporal
Cardinality 0..1
Changeable true
Derived false

Period start.

Type Temporal
Cardinality 0..1
Changeable true
Derived false