Draw me a context-level Data Flow Diagram To draw a context-level Data Flow Diagram (DFD) for the Ice Cream Shop System by hand or using diagramming software, follow these steps
Draw me a context-level Data Flow Diagram To draw a context-level Data Flow Diagram (DFD) for the Ice Cream Shop System by hand or using diagramming software, follow these steps
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
Draw me a context-level Data Flow Diagram
To draw a context-level Data Flow Diagram (DFD) for the Ice Cream Shop System by hand or using diagramming software, follow these steps:
-
Central Process:
- In the center of your page, draw a large rounded rectangle.
- Label it "Ice Cream Shop System" to represent the entire system.
-
External Entities:
- Draw three rectangles on your page for the external entities:
- Place one rectangle at the top and label it "Customer" to represent the source of orders and feedback.
- Place another rectangle at the bottom and label it "Supplier" to represent the entities that supply inventory to the shop.
- Place the third rectangle to the left side of the central process and label it "Inventory System" to represent the system that tracks inventory levels and provides stock reports.
- Draw three rectangles on your page for the external entities:
-
Data Flows:
- Draw an arrow from the "Customer" rectangle to the central process. Label this arrow "Orders and Feedback" to show the data flow from customers to the system.
- Draw an arrow from the central process to the "Supplier" rectangle. Label this arrow "Order Requests" to represent the data flow from the system to suppliers.
- Draw an arrow from the "Inventory System" rectangle to the central process. Label this arrow "Stock Reports" to depict the flow of inventory information to the system.
- Draw another arrow from the central process back to the "Inventory System". Label this "Inventory Requests" to show the system's request for inventory data.
-
Final Touches:
- Make sure all arrows point in the direction of data flow.
- Double-check that all entities, processes, and data flows are correctly labeled.
- Ensure that the diagram is neat and readable.
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