Multiple ChoiceHard 45s
Ledger Immutability and Corrections
A posted ledger entry is wrong. Given a strictly immutable append-only ledger, how should the error be corrected?
Options
- 1Post a new reversing entry that offsets the original, then post the corrected entry, preserving full history
- 2UPDATE the original ledger row in place with the correct amount, silently overwriting the wrong value in history
- 3DELETE the incorrect row entirely and re-insert a fresh corrected entry in its place, so the ledger shows only the fixed value
- 4Truncate the affected ledger partition and replay every entry from the latest backup, discarding the corrupted segment completely
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