Activities may be linked together through interactions. These are observable. Resources are linked by schema relationships. Thus, a set of records of stock corresponds, through a schema, to the items on shelves in a warehouse. The physical compatibility of components or tools are also examples of this type of relationship.
Agencies relate roles and activities.
The basic ontology of enterprise Acts and actions The concepts of acts and actions reflect the relationship between intentions and extensions , between what you observe and the interpretation you place, or are intended to place, on your observations. This is best explained by example. Let us first consider an information resource, a letter. So terms like generate and interpret are acts. Terms like write and read , file , destroy are actions.