interaction overview diagram

File:Uml-Iod-Diagram1.svg

{{UML diagram types}}

Interaction Overview Diagram{{cite book

|chapter=Interaction Overview Diagram

|title=Unified Modeling Language 2.5.1

|series=OMG Document Number formal/2017-12-05

|date=December 2017

|publisher=Object Management Group Standards Development Organization (OMG SDO)

|page=601

|url=https://www.omg.org/spec/UML/2.5.1/PDF

}}

is one of the fourteen "nominative" types of diagrams

{{cite book

|chapter=Annex A: Diagrams (normative)

|title=Unified Modeling Language 2.5.1

|series=OMG Document Number formal/2017-12-05

|date=December 2017

|publisher=Object Management Group Standards Development Organization (OMG SDO)

|page=683

|url=https://www.omg.org/spec/UML/2.5.1/PDF

}}

of the Unified Modeling Language (UML), which can picture a control flow with nodes that can contain interaction diagrams.

The interaction overview diagram is similar to the activity diagram, in that both visualize a sequence of activities. The difference is that, for an interaction overview, each individual activity is pictured as a frame which can contain a nested interaction diagram. This makes the interaction overview diagram useful to "deconstruct a complex scenario that would otherwise require multiple if-then-else paths to be illustrated as a single sequence diagram".[http://www.altova.com/features_interaction_overview_diagram.html UModel Interaction Overview Diagrams]. Retrieved 12 Sept 2008.

The other notation elements for interaction overview diagrams are the same as for activity diagrams. These include initial, final, decision, merge, fork and join nodes. The two new elements in the interaction overview diagrams are the "interaction occurrences" and "interaction elements."[http://www.sparxsystems.com.au/resources/uml2_tutorial/uml2_interactionoverviewdiagram.html Sparx Systems - UML 2 Tutorial - Interaction Overview Diagram]. Retrieved 12 Sept 2008.