Software Design Specification

The software design can be considered as the procedure for converting the requirements of the user into appropriate forms that assists the programmer in coding the software and developing the proposed system.

Running head: SOFTWARE DESIGN SPECIFICATION
Software Design Specification
Name of the Student
Name of the University
Author’s note:

1SOFTWARE DESIGN SPECIFICATION
Table of Contents
Introduction:....................................................................................................................................2
Purpose of SDS:...........................................................................................................................2
Scope:..........................................................................................................................................3
Objective:.....................................................................................................................................3
User Interfaces:................................................................................................................................3
UML Design Diagrams:..................................................................................................................4
Class Diagram:.............................................................................................................................4
Acceptance Test Cases:...............................................................................................................4
System Level State Chart Diagram:............................................................................................5
State Chart Diagram for the Main Controller Class:...................................................................5
Class protocol Test Cases:...........................................................................................................6
Implementation Constraints:............................................................................................................6
Definitions:......................................................................................................................................6
Conclusion:......................................................................................................................................7
References:......................................................................................................................................8

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Introduction:
The software design can be considered as the procedure for converting the requirements
of the user into appropriate forms that assists the programmer in coding the software and
developing the proposed system. The SRS or software requirement specification document is
used for documenting the analysis of the software by the analyst. The data presented in the SRS
document are used for creating the design of the system. The design related information of the
system is stored in the SDS document. The application design is considered as the initial phase
for converting the concentration of the project from the concern domain to the solution domain.
The document holds the information of system design and various testing cases. The
system designs will be based on the case study of Pay Per View TV. A user interface will be
given based on the use case of selecting the movies for broadcasting in the TV. There will be few
conditions for selecting the movies which will be also mentioned in the interface through hints.
Purpose of SDS:
The document will be used for defining the design of the Pay Per View TV’s movie
broadcast selection process. This document consists of particular information regarding the
suitable output, input, functions and classes. The document also holds the interface design to
provide an idea of the navigation through out the system, the type of inputs and how the data is
presented in the subscriber’s TV. It also shows the interaction among the classes to complete a
process. The class diagrams and state chart diagrams will be provided within the document to
provide an idea of the actual system design.

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Scope:
The design specification is to be utilized by the Software Quality Engineering and
Software Engineering like a design definition to be utilized for implementing the ‘Pay Per View
TV’ movie selection process with all the requirements specified in the SRS.
Objective:
The Pay per View operation is to be implemented for the fast run movies. Its purpose is
to implement the condition that subscriber can subscribe limited number of movies and chose
any of the three time slots, each slot is 8 hours long. It records the number of movies and
associated time slots the user have selected. It also record the details of payment processes that
has been conducted to pay the charge of the subscription. The card details are also stored in the
system so that subscriber does not need to enter the card details every time for making the
payment.
User Interfaces:
The use case based on which the system is implemented is ‘Selection of Movies’.

4SOFTWARE DESIGN SPECIFICATION
UML Design Diagrams:
Class Diagram:
Acceptance Test Cases:
Test Cases Acceptance Criteria
The user opens the
subscription page
The system checks the whether the set top box connected to the
TV is subscribed or not. The user enter set top box number and

5SOFTWARE DESIGN SPECIFICATION
system validates it. Only the authorized users are allowed to
access the system
The subscriber selects
more than three movies in
a time slot
The system shows an alert message that no more than three
movies for a time slot can be selected.
The subscriber selects three
or less movies in a time
slot
The system authorizes the selection and confirms the
subscription. Redirect the user to payment section
The user enter the card
details
The system verify the format and length of the details. If the card
details are wring, an error message is prompt on the screen and
subscriber is asked to enter the details again. If the card details
are right then an OTP is sent to the customer registered mobile
number.
User selects the pre-
registered card
The system sends an OTP is sent to the customer registered
mobile number directly
The user enter the OTP The system verify the OTP and initiate the payment deduction
from account. If account has sufficient balance then subscription
is activated otherwise the subscription request is cancelled. In
case of cancellation of subscription, the system gets a proper
error message in the screen.

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System Level State Chart Diagram:
State Chart Diagram for the Main Controller Class:
Class protocol Test Cases:
Implementation Constraints:
The primary implementation constraints are as following.
i. Integrating the interface into the set top box
ii. Choosing the interaction medium between the subscriber and system
iii. Implementing the user interface so that subscriber can easily interact with the
system
iv. Making the system available 24*7

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v. Implementing CRUD applications
vi. Connecting the system with the server
vii. Implement security in the system so that user payment details can be secured
Definitions:
UML: UML is abbreviation of unified modelling language. It stores the structural and
dynamic nature of the system into various models.
User Interface: User interface is the components of the system that user sees on the
screen of a device. The UI or user interface is the medium of communication between the user
and system.
Class Diagram: The class diagram is a type of static structure diagram which defines the
structure of the system through the representation of classes. The class diagrams are consisted of
attributes, relationships, cardinality, optionality and many more.
State Chart Diagram: The state chart diagram primarily describes the behaviour of the
system. It allows the designers to understand the dynamic nature of system.
Conclusion:
From the above study, it can be concluded that the system will be able to receiving and
analysing the input collected from the subscribers. The interfaces provided in the document are
just for demo purpose, the final interface may be different from it. The device, that is TV, will
have a huge impact on how the subscriber will access the interface for selecting the movies and
making payments. This is also a possibility of sharing a link of payment to subscriber contact
number so that payment input related constraint can be eliminated.

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References:
de Vasconcelos, J.B., Kimble, C., Carreteiro, P. and Rocha, A, ‘The application of knowledge
management to software evolution,’ International Journal of Information Management, 37(1),
pp.1499-1506, 2017.
Elks, C., Deloglos, C., Athira Jayakumar, D., Tantawy, A., Hite, R. and Guatham, S,
‘Specification of a Bounded Exhaustive Testing Study for a Software-based Embedded Digital
Device,’, 2018.
Fleischmann, A., Schmidt, W. and Stary, C, ‘Requirements Specification as Executable Software
Design-A Behavior Perspective,’ In REFSQ Workshops (pp. 9-18), 2015.
Spichkova, M., Liu, H., Laali, M. and Schmidt, HW, ‘Human factors in software reliability
engineering,’ arXiv preprint arXiv:1503.03584, 2015.
Yurchenko, K., Behr, M., Klare, H., Kramer, M.E. and Reussner, RH, ‘Architecture-driven
Reduction of Specification Overhead for Verifying Confidentiality in Component-based
Software Systems,’ In MODELS (Satellite Events) (pp. 321-323), September 2017.