3.3 Activity Model

The purpose of the activity model is to capture:

• The activities (tasks or actions) that occurred to create and edit a subsurface model.

• How the activities relate to the data being exchanged.

Each top-level Energistics data object has metadata about its own history, for example, the date that it was created and last edited and by whom or what software. The purpose of the activity model is to provide additional context about “why” and “how” objects were created and changed, and the dependencies between the different elements of a model.

Energistics has basic mechanisms for defining activities and referencing affected data object(s). For more information, see 4.2 Activit ies.