What are the three main roles of the columns in the Pattern Designer?

In the Pattern Designer within ServiceNow, the three main roles of the columns are essential for effectively creating and managing patterns that allow for Discovery automation.

The correct answer focuses on creating and editing steps, selecting operations, and viewing temporary variables. Creating and editing steps is central to the Pattern Designer as it enables users to define the distinct actions that the pattern will execute. Each step represents a specific operation or function that the pattern will perform during discovery.

Selecting operations is critical because it allows users to choose how data will be manipulated within each step. This involves determining the type of action or transformation performed on the data gathered during the discovery process, thus ensuring that the patterns are tailored to specific requirements.

Viewing temporary variables is also vital as it allows users to monitor intermediate values that are generated or modified throughout the execution of the pattern. This visibility aids in troubleshooting and validation, ensuring that the pattern behaves as intended.

Other options might touch upon aspects of the Pattern Designer but do not encapsulate the core functionalities of creating and managing steps and operations as effectively as the correct choice.