The bank does not allow a balance above 10000.

1. Add a CHECK constraint to accounts that keeps every balance at or below 10000.
2. Try to add 20000 to Ava's balance. Which ACID property stopped it?

Give the property name for each event:

3. A transfer's second UPDATE fails. The first UPDATE is undone too.
4. Liam's report runs while Ava's transfer is not yet committed. The report shows the old balances.
5. The server crashes right after a COMMIT. After the restart, the change is there.