You could have a journal to record changes, but presumably you'd still have a single record for a person, with a single field for date of death, that would be s

You could have a journal to record changes, but presumably you'd still have a single record for a person, with a single field for date of death, that would be set and then unset. Edit: I suppose it could be like addresses, if you had a separate address table and you'd be using the most recent address for a person without losing previous addresses. But it may seem like overkill for a field that's normally set only once.