The Clark-Wilson Model is a security framework designed to ensure data integrity in computer systems. It emphasizes the importance of well-formed transactions and separation of duties, which helps prevent unauthorized access and modifications. The model uses a set of rules and constraints to maintain the integrity of data, ensuring that only authorized users can perform specific actions. This model introduces the concept of constrained data items and unconstrained data items. Constrained data items are subject to strict controls, while unconstrained data items can be accessed more freely. By implementing these controls, the Clark-Wilson Model helps organizations protect sensitive information and maintain trust in their data processing systems.