This network diagram illustrates the detailed data flow from the internet to the client, featuring a database system with an agent function. Initially, the internet access point is secured by a firewall to ensure the safety of external communications. Subsequently, data flows to the internal network's database, which not only stores information but also enables secure communication and data exchange through an agent server for clients, allowing for data uploads, downloads, and real-time updates. The whole network design aims to ensure data security and efficient management while providing flexible client access methods.