Activity Diagram - Merge Notation

This section describes the Merge Notation used in a UML Activity Diagram. A Merge Notation represents a merge point where alternate execution paths meet and continue.

A Merge Notations is a graphical notation used in a UML Activity Diagram to represent a merge point where multiple alternate execution paths will meet and continue.

A Merge Notation is drawn as a small diamond shape with multiple incoming control flows and on outgoing control flow. For example, the merge point where "Ship Order" and "Cancel Order" meet can be drawn as a Merge Notation in a UML activity diagram as shown below:
UML Notation Shape - Merge

Last update: 2014.

Table of Contents

 About This UML Tutorial Book

 Introduction of UML (Unified Model Language)

 UML Class Diagram and Notations

UML Activity Diagram and Notations

 What Is an Activity Diagram?

 Activity Diagram - Action Notation

 Activity Diagram - Control Flow Notation

 Activity Diagram - Start and Final Notations

 Activity Diagram - Decision Notation

Activity Diagram - Merge Notation

 Activity Diagram - Fork Notation

 Activity Diagram - Join Notation

 Activity Diagram - Object Notation

 Activity Diagram - Send Signal Notation

 Activity Diagram - Accept Event Notation

 Activity Diagram - Partition (Swimlane) Notation

 Activity Diagram - Frame Notation and Parameters

 UML Sequence Diagram and Notations

 UML State Machine Diagram and Notations

 UML Use Case Diagram and Notations

 MS Visio 2010 - UML Drawing Tool

 References

 PDF Printing Version