Information System and Development: Use Case, Data Flow, Entity Relationship Diagram

This article discusses the development of an information system for a pizza store, including use case diagrams, data flow diagrams, and entity relationship diagrams.

Running head: INFORMATION SYSTEM AND DEVELOPEMNT
Information System and Development
Name of the Student
Name of the University
Author’s Note

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INFORMATION SYSTEM AND DEVELOPEMNT
Table of Contents
Use Case Diagram...............................................................................................................2
Use Case Description...........................................................................................................3
Data Flow Diagram..............................................................................................................8
Context level DFD...........................................................................................................8
Level 0 DFD....................................................................................................................8
Entity Relationship Diagram...............................................................................................9
Bibliography......................................................................................................................10

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INFORMATION SYSTEM AND DEVELOPEMNT
Use Case Diagram
Figure 1: use case diagram of the pizza store
(Source: created by author)

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INFORMATION SYSTEM AND DEVELOPEMNT
Use Case Description
Use Case Name: Customer Login ID:
Use
case_1
Importance Level: High
Primary Actor: Customer
Short Description: The customer needs to login into the system for searching the menu and book
the pizza.
Trigger: The user should have a valid username and password for login into the system.
Type: External

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INFORMATION SYSTEM AND DEVELOPEMNT
Major Inputs:
Description Source
User name and password customer
View menu available customer
Place order customer
Confirmation of order Customer
Major Outputs:
Description Destination
User enabled to use the information
Information system. system
The orders available in the View menu
page
store are displayed in the
menu page.
The customer select the item add to cart
and places order.
After confirmation of the order Customer
The order is sent for delivery address

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INFORMATION SYSTEM AND DEVELOPEMNT
Major Steps Performed
The major steps performed for the development of the information
system are analysis of the user requirement and align the system
according to the needs of the customer.
The use case diagram is developed and it is followed by the
development of the DFD and the entity relationship diagram.
Information for Steps
Stakeholder meetings are
arranged for analysis of
the requirement
The uml use case
diagram is developed for
identification of the
functional module
required to be developed.
Use Case Name: View total bill ID:
use
case_2
Importance Level: High
Primary Actor: Customer and database administrator
Short Description: The customer can view the total bill of the pizza after confirmation of the
order to estimate the cost.
Trigger: The user should have selected a minimum one item for viewing the total bill of the
order placed.
Type: External

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INFORMATION SYSTEM AND DEVELOPEMNT
Major Inputs:
Description Source
The user should have selected an item from the
list of item for placing an order.
The main source is the customer and the
information system.
Major Outputs:
Description Destination
The information system should reflect the
price of the selected product before the final
checkout.
Order confirmation page of the information
system.

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INFORMATION SYSTEM AND DEVELOPEMNT
Major Steps Performed
For testing the total bill for the orders placed in the information
system the price of the pizza is added with the tax and the service
charge for and the final price is displayed in the information system.
The product information and the price should be available for
updating the information system with the product price.
After the selection of the item and display of the total bill the order
is confirmed and the user can logout from the information system.
Information for Steps
The main information of
the steps are the price of
the pizza and the
information system
should be updated if
there is a change in the
price and offers are
available.
The database
administrator should
develop the information
system using the product
information and all the
details for proper
estimation of the bill.
The user should click the
logout button for logging
out from the information
system.

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INFORMATION SYSTEM AND DEVELOPEMNT
Data Flow Diagram
Context level DFD
Figure 2: Context level DFD of the pizza store
(Source: Created by author)
Level 0 DFD
Figure 3: Level 0 DFD of the pizza store
(Source: Created by author)

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INFORMATION SYSTEM AND DEVELOPEMNT
Entity Relationship Diagram
Figure 4: ERD of the pizza store
(Source: Created by author)

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INFORMATION SYSTEM AND DEVELOPEMNT
Flow Chart
Figure 5: Flow Chart of the pizza store
(Source: Created by author)

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INFORMATION SYSTEM AND DEVELOPEMNT
Bibliography
Caetano, A., Silva, A.R., Tribolet, J., Neves, J. and Sinogas, P., 2016, June. The Modify Project:
Combined Business and System Modeling for Adaptable Enterprise Computing System Design.
In Atas da Conferência da Associação Portuguesa de Sistemas de Informação (Vol. 1, No. 1).
Deitsch, A. and Schneider, V., 2018, February. Model-Based System Design and Evaluation of
Image Processing Architectures with SimTAny Framework. In International Conference on
Measurement, Modelling and Evaluation of Computing Systems (pp. 338-342). Springer, Cham.
Dennis, A., Wixom, B.H. and Tegarden, D., 2015. Systems analysis and design: An object-
oriented approach with UML. John wiley & sons.
Popovici, K. and Mosterman, P.J. eds., 2017. Real-time simulation technologies: principles,
methodologies, and applications. CRC Press.