4 ms·
> Writes can be faster because only the modified attributes need to be written to the delta undo log, not the whole row. what is delta undo log?
by avinassh 3y ago
> Writes can be faster because only the modified attributes need to be written to the delta undo log, not the whole row.
what is delta undo log?
- jabl 3y agoIt's an undo log containing the deltas from the latest version (instead of the entire row), so that a previous version can be reconstructed in case of a rollback or if a concurrently running transaction needs the previous version.