Answered: Context diagram and Level ‘0’ diagram (

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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QUESTION 16 Long Answer Question 1: Read the following scenario and draw a logical data flow diagram that includes both the Context diagram and Level ‘0’ diagram (Diagram 0 only for customer) on a piece of paper, take a clear photo and upload it as a solution for this question. The owner of Lunara restaurant decided to build an application for managing the food orders placed by their customers. The proposed application will allow customers to register their details like name, location, phone number and email in the customer file, and receive a registration confirmation letter. Also it will allow them to make orders by browsing the food menu and select their food and add them to the orders file. In addition, it will allow them to complete the payment process either by visa or cash and finally they will receive the receipt. The employees also will be able to add new items to the menu, edit the details of existing items or delete them. The owner will be able to print the reports for decision making. (Hint: Include necessary processes, data stores and external entities to draw the logical DFD)

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