Functional requirements of Online Shopping Cart with non-functional

Functional Requirements

1. User Authentication and Authorization
   • Allow users to create accounts, log in, and manage their profiles.
   • Implement role-based access control if applicable (e.g., for admins or customer support).
2. Product Catalog Management
   • Display a catalog of products, including details such as product names, descriptions, images, prices, and availability.
   • Support product categories, search functionality, and filtering options.
3. Shopping Cart Management
   • Enable users to add, update, and remove items from their shopping cart.
   • Display cart contents, including product details, quantities, and total price.
   • Support functionalities for saving cart items for later or retrieving saved carts.
4. Price Calculation and Discounts
   • Calculate total prices, including item prices, taxes, shipping fees, and any applicable discounts or promotions.
   • Apply discount codes or promotional offers and reflect changes in the cart total.
5. Checkout Process
   • Facilitate a streamlined checkout process, including selecting shipping options, entering shipping addresses, and choosing payment methods.
   • Provide order summary and confirmation before finalizing the purchase.
6. Payment Processing
   • Handle payment transactions securely, supporting various payment methods (e.g., credit/debit cards, digital wallets).
   • Process payment confirmations and generate receipts.
7. Order Management
   • Allow users to view their order history, track order status, and manage returns or exchanges.
   • Provide order details, including shipping information and estimated delivery dates.
8. Shipping and Delivery
   • Provide shipping options, including different delivery methods and associated costs.
   • Integrate with shipping providers for tracking and managing deliveries.
9. Customer Support and Helpdesk
   • Offer support resources and help guides for users to address common issues related to their shopping carts and orders.
   • Provide customer support through various channels (e.g., chat, email, phone).
10. Reviews and Ratings
    • Allow users to submit and view product reviews and ratings.
    • Display aggregate ratings and reviews on product pages.
11. Integration with External Systems
    • Integrate with inventory management systems, payment gateways, and shipping providers.
    • Support integration with CRM systems or marketing tools as needed.
12. Compliance and Legal
    • Ensure compliance with relevant laws and regulations related to online shopping, including data protection and consumer rights.
    • Provide legal documentation, terms of service, and privacy policies.

Non-Functional Requirements

1. Performance
   • Ensure quick response times for browsing products, managing the shopping cart, and processing transactions.
   • Handle high volumes of concurrent users and shopping activities efficiently.
2. Scalability
   • Support the addition of new products, categories, and users as the system grows.
   • Scale to accommodate increasing traffic and transaction loads.
3. Reliability
   • Ensure high system availability with minimal downtime.
   • Implement backup and recovery procedures to protect cart data and ensure business continuity.
4. Security
   • Protect sensitive user and payment data with encryption and secure access controls.
   • Ensure compliance with data protection regulations (e.g., GDPR, PCI-DSS).
5. Usability
   • Provide an intuitive and user-friendly interface for browsing products, managing the shopping cart, and completing purchases.
   • Ensure ease of navigation and accessibility features for all users.
6. Maintainability
   • Design the system for easy updates, maintenance, and troubleshooting.
   • Provide clear documentation for system administrators and developers.
7. Compatibility
   • Ensure compatibility with various devices (e.g., desktops, tablets, smartphones) and operating systems.
   • Integrate seamlessly with other systems and software as needed.
8. Data Integrity
   • Ensure accuracy and consistency of product information, cart data, and transaction records.
   • Implement validation checks and error-handling mechanisms to maintain data quality.
9. Support and Documentation
   • Provide user manuals, help guides, and support resources for troubleshooting and training.
   • Offer technical support for system issues and maintenance.
10. Auditability
    • Maintain logs of user actions, cart activity, and transaction records for auditing purposes.
    • Provide audit trails for order processing, payment transactions, and system modifications.