Pick one and press Start, then click Next › to step through it.
Watch for
T2's read step flagged 'dirty read', then the committed bal snapping back to 100 after T1 rolls back.
More about this scenario
You'll learn
Why the weakest level lets you read data that may never commit.
How it runs
Read Uncommitted lets a read return the newest written version even when its writer is still in flight, so the later rollback erases a value that was already observed.