The article discusses how databases help manage and store data efficiently in systems. It explores different database system structures, like single user, master-slave, distributed, and client/server structures. The focus is on designing client/server databases to enhance system capacity, efficiency, stability, and safety through aspects like network software, protocols, and development tools. The study showcases how applying client/server structures, like in map databases, improves system performance and security. This approach has become widely used in various systems of different sizes.