Multi Step Processes medium
In an Event Sourced system, how do you modify a past record (e.g., correct a typo in an address)?
- A Append a new 'AddressCorrection' event that overwrites the previous state.
- B Run an SQL UPDATE command on the event table.
- C Delete the old event.
- D You cannot change state.
Answer: A. Append a new 'AddressCorrection' event that overwrites the previous state.
The Event Log is immutable (Append-Only). You never mutate history. You append a new fact that supersedes the old fact when the current state is calculated.
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