フリー問題

問題文

Inside a transaction that has already taken its view of the data, a session issues a read with the update clause on the same rows. Which data does that read give back?

選択肢

1. That read therefore returns the stale values rather than the ones held in its own viewpoint.
2. That read therefore returns the latest values rather than the ones held in its own viewpoint.
3. That read therefore returns the pending values rather than the ones held in its own viewpoint.
4. That read therefore returns the earliest values rather than the ones held in its own viewpoint.