Possible relationships

	Relationship	Explanation
	Aggregation	Indicates that an object groups a number of other objects.
	Association	Models a relationship between objects that is not covered by another, more specific relationship.
	Composition	Indicates that an object is composed of one or more other objects.
	Flow	Describes the exchange or transfer of, for example, information or value between processes, function, interactions, and events.
	Used by	Models the use of services by processes, functions, or interactions and the access to interfaces by roles, components, or collaborations.
	Realization	Links a logical entity with a more concrete entity that realizes it.
	Specialisatie	Indicates that an object is a specialization of another object.
	Access	Models the access of behavioral concepts to business or data objects.
	Assignment	Links units of behavior with active elements (e.g., roles, components) that perform them, or roles with actors that fulfill them.
	Triggering	Describes the temporal or causal relationships between processes, functions, interactions, and events.

If you want to know more about the use of the relationships in Achrimate click here.