The chapter discusses ways to prevent errors in data by avoiding unnecessary duplication, storing data together in a database accessible to different programs. It looks at different database methods and the benefits of separating data from applications. A database management system can help with maintaining and changing data efficiently, improving productivity. By keeping databases focused on specific tasks but designed to work together, businesses can share data effectively between different projects. It's essential to understand the difference between using a database and using a database management system for better data organization and efficiency.