What is the main role of process variables in a workflow?

The main role of process variables in a workflow is to capture and transfer data within the process. Process variables serve as dynamic components that hold information related to the workflow’s execution. They are essential for passing data between different nodes, allowing tasks to access and manipulate relevant information throughout the process lifecycle.

For example, when a task is executed, it may rely on the values stored in process variables to perform its function—whether that’s modifying data, making decisions, or preparing outputs for subsequent tasks. Additionally, as the workflow advances, process variables can be updated with new data, thereby ensuring that all parts of the workflow operate with the most current information.

In contrast, other options describe functionalities that do not encompass the primary purpose of process variables. Executing tasks within nodes refers to the actions and operations performed, visual representation pertains to how data is displayed in the user interface, and storing data permanently in a database goes beyond the transient nature of process variables, which are intended for temporary storage during a process instance's runtime.