It took me a second to realize what the difference between this slide and the previous slide was.
In eager evaluation, the transaction can proceed forward in a commit but also backwards (using the undo log) if we abort the transaction.
In lazy evaluation, the transaction can only proceed forward, and it's buffered using the write buffer to make sure that we never have to undo transactions.
It took me a second to realize what the difference between this slide and the previous slide was.
@jezimmer Thanks, that was very helpful.