Data integrity and traceability in data processing systems

摘要

Networked processors (2) are connected to input devices including a weighbridge interface circuit for a milling control application. A database (12) has menu-level and module-level form objects instantiated with data integrity and traceability methods. These cause the processor (2) to record a reason (25) and other change data every time a user wishes to edit data in a record. A timer method is also activated to count time since a last user input device activity was made and cause automatic closing of a module if the count expires.