Customer- customerID: String- name: String- username: String- registrationDate: Date

ContactInfo- phone: String- email: String- address: String

ShoppingCart- cartID: String- totalItems: Integer- subtotal: Decimal

CartItem- productID: String- quantity: Integer- tempPrice: Decimal

Purchase- orderNumber: String- orderDate: Date- totalAmount: Decimal- deliveryMethod: String- status: String

PurchaseItem- itemID: String- quantity: Integer- unitPrice: Decimal- subtotal: Decimal

Payment- paymentID: String- paymentDate: Date- amount: Decimal- paymentMethod: String

DeliveryInfo- deliveryID: String- address: String- deliveryTime: DateTime- courierFee: Decimal

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