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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 09 Issue: 09 | Sep 2022 www.irjet.net p-ISSN: 2395-0072
? 2022, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 606
Business Utility Application
Ramoliya Gaurav Ashvinbhai1, Suhagiya Meet Nareshbhai2, Patel Parth Bharatbhai3 , Trapasiya
Krishnaben Bhaveshbhai4
1,2,3,4 Student, Gujarat Technological University, Ahmedabad, Gujarat.
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Abstract - This app is regarding the businessutilitytomake
management easy and convenient. Generating business bills
and handling accounts of multiple branches. This application
is helpful for cashiers, and managers. With the usage of this
application, cashiers can easily generate tokens and bills and
analyze which item is the best seller during the whole day,
week, or month. The order is placed in the queue and updated
in the database and then returned in real-time. With the help
of that database shop��s owner can also analyze which item is
the best seller during the entire day, week, or month. The
manager can also completely trust the cashier because the
cashier��s login and the manager��s login both are different.
Key Words: Management activity, Digital billing system,
Conventional billing system, Data Analysis features, Tokens,
Iterative and Incremental process.
1. INTRODUCTION
This app is regarding the business utility to make
management easy and convenient. Generating businessbills
and handling accounts of multiple branches. For business
owners who own a shop and have multiple branches. We
discovered that it is hard to manage all branches and survey
all the management activity. To replace the conventional
billing system with the digital billing system with the help of
an application that can work easily, and efficiently. With the
usage of this application, cashiers can easily generatetokens
and bills and analyze which item is the best seller during the
whole day, week, or month. It will improve the management
capability of the ownerandcanoverseeothercashiers�� work.
It will give an easy analysis of the sales of business in three
timestamps (daily, weekly, or yearly). To manage all
branches with flexibility and to ensure all activities of
cashier��s work.
1.1 Technology used
For the application framework we used React native and for
the database used MySQL. VS code is used for programming
and for the API used PHP and python both also for server
connection Ubuntu server is employed.
1.2 Project planning
There are many aspects which are considerable in project
planning. For example: Task planning, scope of the project
and Timeline.
2. SYSTEM ANALYSIS
One of the most limitations of current POS machines is that
they are complex and less flexible. These machines do not
provide data storage and data analysis features. The
maintenance cost of these machines is very high. To
overcome this problem we build this application with
minimal system requirements.
Table -1: Requirements to use application
User System requirements
1. Android/ios smartphone
2. 2 GB ram
3. Bluetooth pos printer
4. Raspberry pi4 server
5. Internet/wi-fi
2.1 Proposed system
We gave different accounts different privileges anddifferent
roles. There are multiple branches of login/signup in the
single app. There are two roles in this application.
1. Cashier Role
2. Manager Role
Privileges of Cashier: The cashier can sign in to only the
cashier account. Cashier can generate bill tokens directly
from the application. Cashier canrefundthe bill amountalso.
Privileges of Manager: Branch owner can sign in to the
manager account as well as the cashieraccounttoo. Manager
can add/remove items and categories. Manager can update
items and categories. Manager can view Daily, Weekly,
Monthly, and Yearly transactions.
3. SYSTEM DESIGN
3.1 Flowchart of New System
Before building the application firstwedrawaflowchartand
in that divide all the section according to their places.
Because it is a graphical representation of steps.

Chart -1: Flow chart
The development starts from a general idea ofwhatneedsto
be built, elaborating on a list of characteristics ordered by
priority (product backlog) that the owner of the product
wants to obtain.
3.2 Data Flow Diagram (DFD)
Data flow diagram is define the flow of data. At DFD level-0
There are two login options: cashier and manager.
In DFD level-1 cashier and manager do all activities which
they can like cashier can generate bills and refund bills and
manager can add or remove items and categories.
Also manager can analyze the data means how many items
sold on particular day and which item is hot favorite on that
day or week.
3.3 Database diagram
Database diagram is useful to describe and design the table
with the correlation of their entity. With the help of that
diagram developer can easily understand the connection of
each tables.

4. IMPLEMENTATION AND DEVELOPMENT
To implement out application we use scrum methodology.
Scrum is an agile development methodology, used in the
development of software based on an iterative and
incremental process. For development, our project is
developed on the Flutter framework and the Dart as our
programming language for the frontend, also we use PHP as
API scripting language and MySQL as our backend. Flutter
and Dart are the emerging technologies that can be used as
cross-platform technologies for mobiledevices,andthey can
help us a lot in making the application easy for any mobile
device regardless of their operating system. PHP is used asa
scripting language made for the APIstoconnectthefrontend
with the database. Also, MySQL is used as a database engine
used for storing and managing our data.
5. TESTING
Testing is the one of the important part while building the
application. In testing part we tested GUI, cashier part,
manager part and the analysis part of the database. All the
test cases not completely working at initial stage but at
deployment stage it performs very well.
We faced a problem during connecting the Bluetooth POS
machine with React Native JavaScript code so we have done
coding on the native side and applied to React Native
bridging to native code. We have encountered another
problem which is a dynamic link by the server that has to be
changed in react native live application because of that ifthe
link changes connection breaks between server and
application. Then we solved it by saving the data offline in
the mobile storage as well as we have made a static server
online where we can provide our application dynamic link
with which we can update the application dynamically and
also offline data get saved to the server.
1. Test ID: GV1 Test Condition:
Layout performance testing.
Expected output: Should perform smoothly in Android
Device.
Actual output: It performs well inDevicesaboveAPIlevel 25.
Remark: Need to make it more smooth in working.
2. Test ID: LIN1 Test Condition:
Login testing.
Expected output: Should navigate in their specific role��s
layout.
Actual output: It performs well.
Remark: Need to work on strengthening the login module.
3. Test ID: CRUD Test Condition:
CRUD testing on database.
Expected output: Should perform add, delete, edit,byfaculty
on database.
Actual output: It works fine and it performs over database.
Remark: Only need to work on the delete function
6. RESULTS
After the deployment we have observedthatforownerswho
has plenty of branches can easily manage their branches. In
past they buy all items raw material and at theendoftheday
items which not sold will be wasted while after using this
app owner analyze data and according to that now they can
reduce wastage. Because of this app now owner can
completely trust on cashier because cashier and manager
both have different portal for their work.
7. CONCLUSION
For business owners who own a shop and have multiple
branches. We discovered that it is hard to manage all
branches and survey all the management activity.
With the usage of this application, cashiers can easily
generate tokens and bills and analyze which item is the best
seller during the whole day, week, or month.
Chart -2: Database diagram

It will improve the management capability of the owner and
can oversee other cashiers�� work. Itwill givean easyanalysis
of the sales of business in three timestamps (daily, weekly,
or yearly).
8. REFERENCES
1. For learn basics of coding: https://www.w3schools.com/
2. Video link how to use Ubuntu server:
https://www.techrepublic.com/article/ubuntu-server-
the-smart-
personsguide/#:~:text=Ubuntu%20Server%20is%20a%2
0server,with%20an%20incredible%20cloud%20presence
3. For MYSQL learning:
https://www.tutorialspoint.com/mysql/mysql-
introduction.htm
4. For Reactnative:
https://www.oreilly.com/library/view/learning-
reactnative/9781491929049/ch01.html
https://docs.python.org/3/c-api/intro.html
https://www.udemy.com/
BIOGRAPHIES
Mr. Ramoliya Gaurav Ashvinbhai,
was a student of department of
Computer Engineering, Apollo
Institute of Engineering and
Technology, Ahmedabad affiliated
with Gujarat Technological
University.
Mr. Suhagiya Meet Nareshbhai,
was a student of department of
University.
Mr. Patel Parth Bharatbhai, was a
student of department of
University.
Ms. Trapasiya Krishnaben
Bhaveshbhai, was a student of
department of Electronics &
Communication Engineering,
Government Engineering College,
Rajkot affiliated with Gujarat
Technological University.

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