Database design schema for an online merchandise store involves identifying the entities, their attributes, and the relationships between them. Here's a simplified example to get you started. Keep in mind that the actual schema may vary based on specific requirements and business needs. 1.Entities. 2.Users. UserID (Primary Key)UsernameEmailPassword 3.Products. ProductID (Primary Key)ProductNameDescriptionPriceStockQuantity 4.Categories. (Primary Key)