What you will learn
- Configuration provenance
- Immutable event records
- Decision traceability
- Retention policy
Configuration provenance
Configuration provenance connects each decision with the settings actually used. A timestamp alone is insufficient if several versions were active. Store stable version identifiers and relevant effective times.
Immutable event records
Event records should preserve what happened without silent rewriting. Corrections can be appended with explanations. The objective is traceability, not pretending that a log cannot ever contain an error.
Decision traceability
Decision traceability links inputs, model version, output and resulting action. It should distinguish a recommendation from an executed order and record failures or withheld actions as well as successful ones.
Retention policy
Retention policy defines what is kept, for how long and under which access rules. Balance reproduction and operational needs with applicable privacy and contractual constraints. Do not retain sensitive data indefinitely simply because storage is cheap.
Worked example
An incident log records an order but not the configuration version that generated its size. The account state may be reconciled, yet the cause remains difficult to reproduce.
Try it yourself
Specify the minimum trace needed to connect a decision to an execution while avoiding unnecessary personal data.
Show the worked solution
Record decision identity, input references, model/configuration versions, timestamps, requested action, order and execution identities, and outcome. Use references rather than copying sensitive material everywhere, and apply an explicit access policy.
Apply this to your course project
Submit an approval, rollback and incident-evidence package for a hypothetical model change.
Keep the calculation inputs, assumptions and decisions with your work. Practical exercises are self-reviewed; the scored knowledge checks assess the questions shown, not an independent certification of practical competence.