What is the name of the diagram that graphically shows the sequence of activities and logic that controls the flow?

The activity diagram is a visual representation that outlines the sequence of activities within a process or system and illustrates the flow of control. It is particularly useful for modeling the dynamic aspects of a system, making it easier to understand how different activities are linked and the order in which they should occur.

This type of diagram employs various symbols to depict activities, decision points, and the movement from one activity to another. With its clear representation of workflows and control flows, stakeholders can quickly grasp complex processes, facilitating discussions about improvements or changes within a system.

In contrast, data flow diagrams focus on how data moves through a system but do not illustrate the sequence of activities or control flow. Use case descriptions provide a textual representation of interactions between users and the system rather than a graphic depiction of processes. State machine diagrams show states and transitions within a system, but they do not specifically depict the order of activities or the control flow as effectively as an activity diagram does.