Comprehensive entity relationship diagram for a multi-user e-commerce platform with distinct User, Customer, Admin, and Visitor entities managing authentication, sessions, and role-based access. Data flows through interconnected tables including Products, Categories, Carts, Orders, Payments, and DeliveryAddresses, with CartItem and OrderItem junction tables enabling flexible product variants and historical pricing. The schema implements audit logging via AuditLog, session management through Session entities with CSRF protection, and supports wishlists and delivery address management for personalized customer experiences. Fork this diagram on Diagrams.so to customize entity relationships, add new tables, or export as .drawio for integration into your database design documentation. This architecture demonstrates best practices for separating user roles, maintaining referential integrity, and tracking transactional history in production e-commerce systems.