Functional requirements of Restaurant Ordering System with non-functional

Functional Requirements for a Restaurant Ordering System

1. User Authentication and Authorization:
   • Customer: Ability to create accounts, log in, and manage personal profiles.
   • Restaurant Staff: Secure login and role-based access for different functions (e.g., waitstaff, kitchen staff, managers).
   • Admin: Full access for system configuration and management.
2. Menu Management:
   • Admin/Restaurant Staff: Add, update, and delete menu items, including details like name, description, price, and category.
   • Support for special offers: Ability to manage promotions, discounts, and daily specials.
3. Order Placement:
   • Customers: Browse the menu, customize orders (e.g., special instructions, add-ons), and place orders.
   • Support for various order types: Dine-in, takeout, delivery.
   • Real-time order status updates: Notify customers of order status (e.g., preparing, out for delivery).
4. Table Management:
   • Restaurant Staff: Manage table assignments, reservations, and seating arrangements.
   • Customers: Option to reserve tables in advance and view available time slots.
5. Order Tracking and Management:
   • Restaurant Staff: View and manage incoming orders, update order statuses, and handle special requests.
   • Kitchen Staff: Access order details, update preparation status, and manage kitchen workflow.
6. Payment Processing:
   • Customers: Choose from various payment methods (e.g., credit/debit cards, mobile payments).
   • Integration with payment gateways: Process payments securely and handle refunds if necessary.
7. Customer Feedback and Ratings:
   • Customers: Provide feedback and rate their dining experience.
   • Restaurant Staff: View and manage customer reviews and feedback.
8. Reporting and Analytics:
   • Admin/Restaurant Managers: Generate reports on sales, order volumes, customer preferences, and inventory.
   • Track performance metrics: Analyze data to make informed decisions and improve operations.
9. Inventory Management:
   • Restaurant Staff: Track inventory levels, manage stock, and reorder supplies.
   • Alert system: Notify staff of low stock levels or expired items.
10. Reservation Management:
    • Customers: Book tables in advance and modify or cancel reservations.
    • Restaurant Staff: View and manage reservations, including walk-ins and pre-booked tables.
11. User Preferences and Customization:
    • Customers: Save favorite orders, view order history, and set dietary preferences.
    • Restaurant Staff: Customize interface based on role and operational needs.
12. Integration with External Systems:
    • POS Systems: Integrate with point-of-sale systems for order and payment processing.
    • Delivery Platforms: Integration with delivery services for efficient order dispatch.
13. Notifications and Alerts:
    • Customers: Receive notifications for order status, special offers, and reservation confirmations.
    • Restaurant Staff: Alerts for new orders, special requests, and inventory updates.

Non-Functional Requirements for a Restaurant Ordering System

1. Performance:
   • Ensure fast response times for menu browsing, order placement, and payment processing.
   • Handle high volumes of simultaneous orders and customer interactions efficiently.
2. Scalability:
   • The system should scale to accommodate increasing numbers of orders, users, and menu items.
   • Support both horizontal and vertical scaling as needed.
3. Reliability:
   • Ensure high availability with minimal downtime.
   • Implement redundancy and failover mechanisms to maintain service continuity.
4. Security:
   • Use strong authentication and encryption to protect user data and financial transactions.
   • Regularly update security measures to address vulnerabilities and protect against threats.
5. Usability:
   • Design an intuitive and user-friendly interface for customers, restaurant staff, and administrators.
   • Provide clear instructions and support to facilitate smooth interactions.
6. Maintainability:
   • Design the system with modularity and clear documentation to facilitate maintenance and updates.
   • Implement automated testing and monitoring to detect and resolve issues quickly.
7. Interoperability:
   • Ensure compatibility with external systems such as payment gateways, POS systems, and delivery platforms.
   • Support standard data formats and communication protocols for seamless integration.
8. Availability:
   • The system should be available 24/7, with mechanisms to handle high traffic and system outages.
   • Implement regular backups and disaster recovery procedures to ensure data integrity and system continuity.
9. Compliance:
   • Adhere to relevant data protection regulations (e.g., GDPR, CCPA) to ensure user privacy and security.
   • Ensure compliance with local health and safety regulations related to food service.
10. Accessibility:
    • Design the system to be accessible to users with disabilities, following WCAG (Web Content Accessibility Guidelines).
    • Ensure compatibility with assistive technologies and various devices.
11. Localization and Internationalization:
    • Support multiple languages and regional settings for a global user base.
    • Allow customization of the interface and menu items based on regional preferences and legal requirements.
12. Disaster Recovery:
    • Implement a disaster recovery plan to restore system functionality in case of major failures or data loss.
    • Regularly test and update recovery procedures to ensure effectiveness.
13. Data Accuracy and Integrity:
    • Ensure accurate and reliable data for menu items, orders, and financial transactions.
    • Implement validation mechanisms to prevent and correct data errors, and perform regular audits to maintain data quality.