Consider the following Online Bookstore System

$$ User Management and Authentication: The system allows users to register and log in$,$ maintaining distinct user roles such as customer, admin, and guest. Registration captures user details, while login ensures authenticated access to the system.

$$ Product Catalog Management: Administrators can add, update, or remove books in the catalog. Each book's record includes title, author, price, and genre. This module is integral for inventory management and display.

$$ Search and Recommendation Features: The system offers a search function for users to find books. A recommendation engine is also incorporated, suggesting books based on user preferences and browsing history.

$$ Shopping Cart and Checkout Process: Users can add books to their shopping cart and proceed to checkout. The checkout process involves confirming the order and making payment, integrating with various payment gateways.

$$ Order Processing and Management: Once an order is placed, it is processed and tracked within the system. Key actions include inventory updates and sending order confirmations to customers.

$$ Shipping and Delivery: The system manages shipping information and processes, offering different shipping options. It tracks and updates the delivery status of each order.

a$)15$ Marks$]$ Create a Data Flow Diagram $($DFD$)$ context diagram.

b$)[15$ Marks$]$ Create level $0$ DFD$.$ Make sure you balance the diagram before you submit