type	Concrete Class
Name	Activity Occurrence
Description	An action that takes place during a period of time. Each action has an activity type, but details of the type information is not described here, but in the concept of Activity Type.
Immediate Parent
Object Attributes	Process Name, Instance ID, System (trigger, precondition, action), Begin Time, End Time
Source Provider
Authority
Example	The actual business processes that have been carried out.
Inclusion
Exclusion	The different types of business processes.
Rules
Cross Reference	Activity Type
Modeller
Date
Status
Comment
Derived From