System Modelling

Running head: SYSTEM MODELLING
System Modelling
Name of the Student
Name of the University
Author Note

1SYSTEM MODELLING
Table of Contents
Introduction................................................................................................................................2
The identification of the system or subsystem...........................................................................2
Use Case 1: Managing stocks....................................................................................................2
Description of the use case in plain English..........................................................................2
Extended use case description................................................................................................3
Activity diagram.....................................................................................................................5
Sequence diagram..................................................................................................................6
Use Case 2: Buy product............................................................................................................7
Description of the use case in plain English..........................................................................7
Extended use case description................................................................................................7
Activity diagram.....................................................................................................................9
Sequence diagram................................................................................................................10
Screen Designs.........................................................................................................................10
Login....................................................................................................................................11
View products......................................................................................................................11
Add products........................................................................................................................12
Conclusion................................................................................................................................12
Bibliography.............................................................................................................................13

2SYSTEM MODELLING
Introduction
The use of the modelling technique is very important for the development of any type
of organization. The report has been used for the description of the Amazon organization.
Descriptions of the sub system and the procedures have been included in this report for the
organization. The identification of the sub system was for starting with the report. After the
sub-systems were identified the dull description of the use cases and the related modelling
developments were done. The details of the all the models have been included in this report.
The identification of the system or subsystem
The identification of the system or subsystem is very much important in this case. The
FBA sub system is used in this report for the description of the Amazon organization. The
description of the further sub divisions of the system has been included in this report. The use
cases described in this report are Managing stocks and buy products. The management of
stock is very much important in this case as it helps in proper business regulation. With that
purchasing of the products is also very much important for the organization as overall profit
of the organization depending on this case.
Use Case 1: Managing stocks
Description of the use case in plain English
Considering the use case of managing stocks this is very much important for the entire
system. From the use case of the managing stock it has been assessed that the ID of the use
case is STC2. For the use case of managing stock currently there are various of actors.
Among these actors the main actor is employee. The employee is the main actor in this case
as it performs some important tasks for the whole system. In this system the actor is
important as the employee is responsible for checking all the stock. With that the employee is

3SYSTEM MODELLING
also responsible for counting the total number of items. In the next step all the information
regarding the stock and the items are directly provided to the supplier by the employees. This
use case is currently flows in two ways. First one is the basic flow and the second flow is the
alternative flow. Through the basic flow of the system, all the available stock in the system
can be accessed and it is the primary objective in this case. Through the alternative flow, the
employees in the system will be able to monitor the other data present in the FBA. In this
case some pre condition need to be satisfied so that the actors will be able to monitor the
actual stock of the current system. In this case the employees must provide a valid user name
and password for accessing the stock. After proper monitoring of the stock employees will be
able to track all the information regarding stock and will be able to keep record with them.
The employees are also responsible for sending the invoice to the supplier.
Extended use case description
Use case name Managing stock
Use case ID STC2
Actor Employee
Brief description The actor checks stock and count number of items.
Information is send to supplier
Basic flow Accessing number of items available in stock
Alternative flow The actor monitor other data of FBA
Pre condition The actor is provided username and password to access data
of stock.
Post condition Employee keeps record of stock which is required.