Design a normalized schema (3NF/BCNF) for Products, Warehouses/Locations, Inventory_Levels, Suppliers, Purchase_Orders, Sales_Orders, Audit_Logs, etc. Utilize advanced data types, constraints (CHECK, ...
│ ├── index.php # Main entry point (Customer) ├── database.sql # Database schema and sample data │ ├── admin/ # Administrator files │ ├── index.php # Admin dashboard │ ├── db_connect.php # Database ...