Definition
A protected chronological record that allows the creation, modification or deletion of data to be reconstructed together with who acted, when and what changed.
Human Explanation
It shows who changed data, when the change occurred and what was changed.
Why it Matters
It supports traceability and detection of unauthorised or inappropriate changes.
Conceptual Boundary
The existence of an Audit Trail alone does not ensure Data Integrity; it must be protected, reviewed and connected with the process.
Practical Perspective
Review scope and frequency should follow risk, data significance and system use.