Level 0 DFD for a property management system orchestrates eight core processes—user access, property operations, customer management, inquiry handling, sales, payments, task management, and reporting—across three user roles: business owners, agents, and customers. Data flows from external actors through functional modules to a central property database and eight normalized tables storing roles, users, customers, inquiries, sales, payments, and tasks. This architecture demonstrates separation of concerns and role-based access control, critical for multi-tenant real estate platforms managing complex workflows. Fork this diagram on Diagrams.so to customize processes, add AWS service mappings, or extend with additional data stores. The design supports scalability by isolating payment processing and inquiry management as independent subsystems.