1.Login page( username,password , forget password button)

2. Add product page

3. Categories of product

4. Add to cart page

5. Make purchases page ( show successfully added to basket)

6. Enter customer name,address,hp number,payment option and notes that customers can add in (special request) in the checkout page

7.Reserve delivery time ( like the customer can choose the time of delivery, so prepare plenty of time slot that they can choose)

8.Payment

9.Generate invoices ( users can click on generated receipts button and the system will show the receipt that they can print or save to gallery)

Based on the functions given above, create a Data Flow Diagram(DFD) for context and level 0 diagram.