Use the worksheet to complete each operational request and inspect what it produced. These tasks combine file handling, incremental changes and access rules. The same account fixtures are available, but each request selects a different file, branch or output from the guided lessons.
Read the requested boundary before you run a command. An entire stage and a single filename can produce different loads. A stream SELECT leaves changes available, while a write consumes them. A role switch changes policy results without editing stored values. The checker reruns your worksheet against a second fixture copy, so fixed rows and copied totals will not finish the task. Task schedules do not run in the background here. Request an explicit local execution when the task needs to produce rows, and use the target query as your evidence.