GamerHub Digital Storefront ER diagram models a complete game marketplace with five core entities: CUSTOMER, GAME, CATEGORY, ORDER, and SHOPPING_CART, connected through normalized relationships. Customers place orders containing multiple games via ORDER_DETAIL, while SHOPPING_CART enables persistent cart functionality with quantity tracking and timestamps. The schema enforces referential integrity through foreign keys, supports multi-currency pricing in JOD, and maintains inventory via StockQuantity, making it ideal for indie game platforms and regional digital storefronts. Fork this diagram on Diagrams.so to customize entity attributes, add payment methods, or extend with user reviews and wishlists. The 1:N cardinality between CUSTOMER and ORDER, and between ORDER and ORDER_DETAIL, reflects typical e-commerce transaction patterns while SHOPPING_CART's independent relationship enables abandoned cart recovery workflows.