4 ms·
If the transaction log is kept for the mutable system, you can always replay the transaction to arrive at the correct state. Most systems truncate the transact
by ww520 15y ago
If the transaction log is kept for the mutable system, you can always replay the transaction to arrive at the correct state. Most systems truncate the transaction log after a checkpoint to save space. If space is not an issue, you can always keep the transaction log since the beginning.