An association indicating that an activity is classified as a member of an activity class. An activity may have many classifications, both simultaneously and sequentially.

end_time (O, K, I: ndt_date_tod)

End time of the association. Inherited from transient_association.


start_time (O, K, I: ndt_date_tod)

Start time of the association. Inherited from transient_association.


activity_class (M, K: activity_class(activity_classification))

This is the activity class that this association assigns to the activity it is related to. Each activity_classification must class one activity_class.


activity (M, K: activity(activity_classification))

This activity classification associates an activity with an activity class. Each activity_classification must classify as a member one activity.


description (O, I: ndt_comment)

A description of the transient association. Inherited from transient_association.


duration (O, I: ndt_time)

Defines the duration of the association expressed in any valid units of time. Inherited from transient_association.


caused_by (O, I: activity(cause_association))

Specifies the activity which establishes this association. Each activity_classification may be caused by one activity. Inherited from transient_association.


data_collection (I, V: SET[0:?] data_collection(collection_content))

Indicates the data collections that include this instance of E and P data. Each activity_classification may be a member of one or more data_collection. Inherited from e_and_p_data.


graphical_element (I, V: SET[0:?] graphical_element(depicted_object))

Specifies one or more graphical elements which are depicting this data item. Each activity_classification may be depicted by one or more graphical_element. Inherited from e_and_p_data.


ref_transient_period (O, I: ref_transient_period) (1222)

The type of period over which the property applies, such as day, month, quarter, cumulative, etc. Inherited from transient_association.


terminated_by (O, I: activity(terminate_association))

Specifies the activity which established the termination of a transient association between two objects. Each activity_classification may be terminated by one activity. Inherited from transient_association.

Local rules:

Uniqueness Constraint
end_time, start_time, activity_class, activity
[I: transient_association] Instance Value Constraint (1259)
If REF_TRANSIENT_PERIOD is EVENT, then both START_TIME and END_TIME must either be blank or be identical.
[I: transient_association] Instance Value Constraint
If REF_TRANSIENT_PERIOD is either YEAR TO DATE, MONTH TO DATE or CUMULATIVE, then END_TIME must be instantiated.
[I: transient_association] Instance Value Constraint
If REF_TRANSIENT_PERIOD is ANNUAL, SEMIANNUAL, QUARTER, MONTHLY, DAILY, or HOURLY, then either both START_TIME and END_TIME are blank or both must be instantiated.
Supertype path(s):
e_and_p_data > association > transient_association > activity_classification.

Entity projects as table ACTIVITY_CLSN.

Referenced in Diagrams:

• AC4: Activity Classes & Typicals