The Remove from Cart use case allows customers to remove items from their cart if they change their mind. Once a customer has found the desired product, they can add it to their cart using the Add to Cart use case. The Search Products use case allows customers to search for groceries based on various criteria such as product name, brand, and category. The use case diagram outlines the various tasks that can be performed within the system. The system typically includes features such as product inventory management, order management, and payment processing. View and play PowerPoint presentations online.Īn Online Grocery Delivery System is a software application designed to allow customers to order groceries online and have them delivered to their doorstep.