These are the contracts that provide specifications, requirements, or other information about this type of activity. For example, a contract may describe the manner in which this type of activity is performed. Each contract_activity_type may be a subject of one contract.
The activity type which is specified by the contract or required by the contractual obligation. Each contract_activity_type must describe one typical_activity.
Indicates the data collections that include this instance of E and P data. Each contract_activity_type may be a member of one or more data_collection. Inherited from e_and_p_data.
Specifies one or more graphical elements which are depicting this data item. Each contract_activity_type may be depicted by one or more graphical_element. Inherited from e_and_p_data.