LAN managers can do the same for their servers. Request Form - A form allows for quicker analysis of requests, an audit trail, and a signoff by requester. Program Test Procedures - Program testing should involve actual users with loosely defined scripts. There should be a signoff by user management showing acceptance of results. To complete the audit trail from change request to change log and on to actual program change, library management software is needed.
Frequent changes are an indication of instability.
A separation of computer operations and programming, generally, indicates better internal control. A separate test environment will prevent programming errors from entering the production system. Audit trail a. Program Change Events - Generally logged by library management software. This includes program adds, updates and deletes.