Web Application Development for Argos

This report covers the development, design, implementation, testing, and evaluation of a web application for Argos. It includes user requirements, database design, security recommendations, and user feedback analysis.

Web Application Development

Contents
Introduction................................................................................................................................3
LO1 Understand the concepts of web application development................................................4
P1.1 Critically evaluate the functions and advantages of web applications..........................4
P1.3 Examine web security and make recommendations for security improvements...........9
LO2 Be able to design web applications..................................................................................11
P2.1 Design a web application to meet requirements given in the case study.....................11
P2.2 Synthesise client-side and server-side functionality in a web application...................15
P2.3 Apply a database design for the given scenario...........................................................17
P2.4 Evaluate alternative designs and solutions to meet the given requirement as explained
in the case study...................................................................................................................18
LO3 Be able to implement web applications...........................................................................20
P3.1 Implement a web application to a prepared design using client-side and server-side
scripting languages...............................................................................................................20
P3.2- implement a web-enabled database management system to store, retrieve and
manipulate data in a web application...................................................................................24
P3.3 Identify and implement opportunities for error handling and reporting for the given
case study.............................................................................................................................27
LO4 Be able to test web applications.......................................................................................30
P4.1 Critically review and test a web application using a web enabled database
management system for the chosen company case study in task 2......................................30
P4.2 Analyse actual test results against expected results to identify discrepancies.............34
P4.3 Critically evaluates independent feedback on a developed web application and make
recommendations for improvements....................................................................................35
P4.4 Creates user documentation for a developed web application in task 3......................37
Conclusion................................................................................................................................39
References................................................................................................................................40
1

List of Figures
Figure 1- Web Application.........................................................................................................4
Figure 2- Server-Side Scripting.................................................................................................6
Figure 3- Client-Side Scripting..................................................................................................7
Figure 4- Homepage Storyboard..............................................................................................11
Figure 5- About Us Storyboard................................................................................................12
Figure 6- Account Details........................................................................................................13
Figure 7- Contact Details storyboards......................................................................................14
Figure 8- Hierarchy of Client Needs........................................................................................15
Figure 9- Hierarchy of User Needs..........................................................................................15
Figure 10- Use Case Diagram..................................................................................................16
Figure 11- ER diagram.............................................................................................................17
Figure 12- Homepage...............................................................................................................20
Figure 13- About Us page........................................................................................................21
Figure 14- Contact us page......................................................................................................22
Figure 15- My account page....................................................................................................23
Figure 16- Orders Page............................................................................................................23
Figure 17- Product page database............................................................................................24
Figure 18- Argos database.......................................................................................................25
Figure 19- Contact details error handling................................................................................27
Figure 20- Empty cart error......................................................................................................28
Figure 21- No order error.........................................................................................................29
Figure 22- Chrome browser Testing........................................................................................32
Figure 23- Mozilla testing........................................................................................................33
List of Tables
Table 1- Test Result.................................................................................................................34
Table 2- About Product Page...................................................................................................35
Table 3- About Seller...............................................................................................................35
Table 4- About Website...........................................................................................................36
Table 5- About Services...........................................................................................................36
2

Introduction
E-commerce website plays an important role in developing the website. Through the e-
commerce website, user can easily buy the products from any corner of the world. Based on
this thing the Argos think to implement the website.
In this report, I have implemented the website in four different section. In the first section, I
have discussed the functionalities and advantages of the website. After that, in the second
section, I have discussed the designing of the website. implementation of the website for the
Argos is implemented in the third section. In the fourth section testing of the website is done
by me. Through this report, user can easily learn the basic concept of website design in an
easy manner.
3

LO1 Understand the concepts of web application development
P1.1 Critically evaluate the functions and advantages of web applications
Web Application is a computer program that performs task between a web browser and web
technology on the Internet.
Web Application Advantages:
 Easy to Upgrade: It is very easy to upgrade, and not depending on software platform. It
can run on different types of a computer that are having a different operating system.
 Open Source Software: In this, there are many software development tools which are
used to speed up to web development and reduce the cost.
 Maintenance: In this, the developers follow reputed companies. They check all the errors
in the web application. The developers follow well mature and well defined. In the result
the lower maintenance cost and the older web application compatible with new version of
the software.
 Performance: In this, the performance is the main thing in a web application. If it does
not perform well at the running time, then it was waste. If the web browser uses a lot of
images and data over the slow internet connection, it is very frustrating for the user who
is waiting for the image upload and constantly refreshing the page after every click.
Types of Web Application User:
 Regular User: The regular user ages between 16-60 (retired). Regular users can be Male,
Female, Teenager, and old age using this web application regularly. The regular users
browse the web application likes Amazon, Lazada, Bonanza, Wish, Ziffy, and Alibaba
etc.
 Occasional User: In this category, users browse the web application occasionally and at
sales offer, their age limit is 16-50. Occasionally users like Male, Female. The occasional
user irregularly browses the web application.
4
Figure 1- Web Application

Requirement of Web Application:
 Education and Work: The education and work web application are mostly used at this
time because the teenager mostly used the web application for education like Wikipedia,
Tech target, slide share. For Work web application, People searches job through online,
there are many web applications for work on the internet like Monster.com, Indeed, TES
and NHS Jobs and so on.
 Health and Safety: In this, there is health and safety web application over the internet,
the user can online search the health requirement things like medical, doctors and online
chats with doctors for health regarding. Like DoctoronDemand, Health Tap, and Live
Health Online.
 Accessibility: Web Accessibility means that people easily understand the things on the
Internet.
 Resizable Font: In this, the font size must be in 13-14 by this the user can easily read the
things, without any inconvenience. The developer used the different types of font size like
Heading part font size is 18 and paragraph part font size is 13.
 Support for Screen Readers: In this, the developers make the web application things for
users comfortable so that they can easily read out the thing and support on the screen.
 Adjustable Fonts: The developer uses the adjustable font in a web application for the
users by this the font not blur on the screen (Maxcdn, 2016).
Functionality: Nowadays, Internet is becoming hub of products. People can go through and
shop for products online this market is evolving day by day which needs functionalities like:
 Shopping Cart: - In this, the customers want an advanced feature in a shopping cart like
a mobile website option, Free or Competitive Shipping Options, Images with good
resolution, Description of the product, Review about the product and Product Similar to
the Display Images.
 Reserve Order: - Reserve Orders shows Payment Option, Reserve products, availability
of the Products, Orders Details, and Order Tracking.
 Manage User Profile: - In this, the user can manage their profile for such option like
product Deliverable or not, Past Orders, Credit Points, Coupons and Discount and, they
get Membership Card.
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P1.2 Critically compare different types of server-side and client-side scripting languages
What is Server-Side Scripting?
Figure 2- Server-Side Scripting
Server-Side Scripting is a connected database to the web server. It is a technique used in web
design which involves HTML language codes which gives results on web server page. It is
used to dynamic Pages.
ASP (Active Server Pages): ASP used in a web application for easy to develop and modify.
It is a server-side scripting to run and dynamic, interactive the web application.
Advantage:
 It is easy to implement also data durability.
 It works multi-process configuration.
Disadvantage:
 If the worker process recycles all session data will be lost.
 It is not suitable for web farm scenarios
PHP (Pre-processor Hypertext Language): - PHP is most popular programming language
on server-side. It is a general-purpose scripting language that is especially suited to web
development.
Advantage:
 PHP can run on several platforms easily.
 It can host service providers for the server-side scripting language and can be easily
found.
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Disadvantage:
 It is difficult to use in the large application.
 PHP get interpreted easily.
JSP (Java Server Pages): The web server executes It. Also, it is controlling the content of
web pages through the server.
Advantage:
 JSP is platform independent whereas ASP is not.
 JSP needs no compilation.
Disadvantage:
 Building JSP pages are time-consuming.
 The result of JSP pages is in HTML format which includes fewer features (Oxxus, 2017).
Client-Side Scripting:
Figure 3- Client-Side Scripting
It manipulates browser documents, accesses the browser, and validates user inputs. Its only
run on a local browser. The codes are used in the client-server side are JavaScript, Java
Applets, and VB Script. There are many things client server cannot do.
JavaScript: - It is an interpreted programming language. The created codes are called Script.
JavaScript makes alive the web pages.
Advantage:
 It is easy to learn.
 Also, it is fast to the user end.
Disadvantage:
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 In this malicious code executed when complying is not allowed.
 It also gives different result in terms of Functionality (Jscripters, 2017).
VB Script: - It is mainly used for Intranet that is only used for the internet browser. It
supports rapid action development.
Advantage:
 VB interacts with the development environment.
 Executable code can be developed through this type of script.
Disadvantage:
 It is only used for windows.
 It has own limitation and wants more feature to access the requirement fulfil for web
development (Digitalrise, 2014).
jQuery: - In jQuery, the codes are less and do more. It is made to easier for javascript.
Advantage: jQuery takes fewer codes to show the same features.
Disadvantage: When it was time to run the codes javascript files run only jQuery commands
(Jscripters, 2017).
AJAX (Asynchronous Javascript and XML): - It also used for interactive the web pages
and quick interfaces. AJAX can work on HTML, asp.net, and Perl.
Advantage: It can allow easier navigation. AJAX allows easier interact with user and
websites.
Disadvantage: It has security issues because anyone can see the view source (Jscripters.com,
2017).
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P1.3 Examine web security and make recommendations for security
improvements
Web Security: Web Security involves the protecting, detecting, and responding to attacks.
Web Security issues are Malicious Website, Spam, and phishing.
Security Requirements:
User Accounts: User wants strict security on their website account. The password should be
strong, not use the same password for every account, protect pins of credit card and debit
card.
Account Restrictions: In this, a local user can be allowed for single username and password
another side the domain user can have multiple username and password.
Terms of Use: If the credential is unprotected the hackers slip into the user accounts. If the
user uses custom-made authentication software so that there a lot of chances of hacking in the
system.
Security Attacks: There are different type of attacks that are possible on Argos website.
These are shown below:
 SQL Injection: This is a very popular method of hacking can lead to hacker’s access to
the system, corrupting the sites. It mostly happens when the user is login to the
unauthorized page.
 Dictionary Attack: It is a password attack hacking where the hacker well knew the
phrase of the password. If the user tries for password 3-4 times and the password was
wronged then the user has to wait for 2 minutes (Computerhope, 2017).
Recommendations: Certain recommendation can be placed through which the website of the
Argos can be protected. These are shown below:
 Authentication: It identifies the users, with username and passwords. There are few
techniques are smart card and biometrics are available.
 Authorization: It is the request from the user who can access their username and
password to secure system. Those resources who are appropriate to access the data into
the system.
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 OWASP (Open Web Application Security Project): It is an open source application
security who provides the awareness about the security. It approaches security to the
technology and process and the users.
 ESAPI (Enterprise Security API): - It is security control library. It is provided by
OWASP. It is also an open source web application. It supports multiple programming like
Php, DOTNET, Java.
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LO2 Be able to design web applications
P2.1 Design a web application to meet requirements given in the case study
Designing of the website is done by taking the help of the storyboards. Through the help of
the storyboards, the design of the website can be completed easily. Through this, a brief idea
of the components that are going to be used on the website can be understood easily.
All the storyboards are developed by taking the help of the Balsamiq tool. All these
storyboards are shown below:
Homepage:
Figure 4- Homepage Storyboard
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About us:
Figure 5- About Us Storyboard
12

Account Details:
Figure 6- Account Details
13

Contact details:
Figure 7- Contact Details storyboards
14

P2.2 Synthesise client-side and server-side functionality in a web application
Client-Side Functionality:
The client-side value cannot be synchronized with the server-side. API can change the client-
side. The client-side development is done in JavaScript. Its script runs after web page loaded.
The client-server requesting to the server for the pages and then displays to the user. Also, the
client-side is Web Browser. Client-Side cannot relate to database in the web server.
A server-side development in HTML. It scripts to run before HTML page is loaded. In this
side, the scripts are not run customer computer system. It is responsible for serving the pages.
The side interacts with the Back-End. The Server-Side is used to connect to the database on
the web server.
Client Needs: The Client Needs are monitoring and reviewing, giving proposal and
implementation and needs and expect analysis. The clients have own goals and desire. Client
requires the search tab through which user can easily search the products without wasting
time.
Figure 8- Hierarchy of Client Needs
User Needs: There are different requirements for users which are shown below:
Figure 9- Hierarchy of User Needs
 All the contents that are present on the Argos website have to be true.
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 All the images that are present on the website of Argos have to be relevant and have to
matches with the product.
 All the data of the users have to keep secure. For that security inside the website has to be
made in such a manner so that unauthenticated person can’t access the information.
 The website has to be accessible by the user in a 24X7 manner.
Use case diagram:
Figure 10- Use Case Diagram
16

P2.3 Apply a database design for the given scenario
The database of the Argos website is developed on the phpMyAdmin. Through this, the data
inside the database can be stored in an easy manner. All the data of the users, as well as
Argos, can be stored in a proper manner.
Design: Before designing the database I have to design logical design. While designing this I
have implemented a different type of tables. After that, it is converted into the physical model
and through this, the organisation of the data can be done in an easy manner.
ER modelling: as I have implemented the conceptual design, therefore, working with the ER
model is the easy concept. Different primary and foreign keys are implemented through this
modelling technique. The ER model that I have developed for the Argos is shown below:
Figure 11- ER diagram
17

P2.4 Evaluate alternative designs and solutions to meet the given requirement as
explained in the case study
Word Press: - It is a web software and used to create blogs and websites (Media Realm,
2017)
Advantages Disadvantages
Word Press is a low cost, it is used for
making smaller business.
Word Press does not assign to many people.
It has limited permissions.
Word Press is an open source software, in
this, there is no need for the license fee
and the user can create and modify in
web press.
In this many sites are self-hosted.
In word press, there are many options to
SEO-plugins.
Word Press does not have a high
functionality like another system.
Nonexperience people also use the word
press.
It has security flaws, hacker hack word
press sites easily.
Joomla: - Joomla is an open source software.It is used for developing sites. Joomla is
Content Management System. Joomla is a higher version of word press. In this, the websites
develop by drag and drop option (Hostpresto, 2014)
Advantages Disadvantages
It is easy to use. Not easy to customize functions and
features.
It has many themes and features. There are not easy to download theme
from Joomla,
It is mainly designed for Word Press. In this different cost available for
downloading themes.
It is more flexible than word press. It is difficult to maintain.
PHP (Pre-processor Hypertext Language): - Php is most popular programming language
on server-side. It is a general-purpose scripting language that is especially suited to web
development (raygain, 2017).
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Advantage Disadvantage
PHP runs on several platforms. It is difficult to use in the large application.
It is hosting service providers for the
server-side scripting language and can
be easily found.
PHP get interpreted.
It is easy to make web pages PHP is insecure and entry-level language.
It has a low barrier to entry. Its codes based likes Word Press
19

LO3 Be able to implement web applications
P3.1 Implement a web application to a prepared design using client-side and
server-side scripting languages
The website of Argos consists of different pages. These pages are shown below:
Homepage:
20

Figure 12- Homepage
About Us page:
21

Figure 13- About Us page
22

Contact us page:
Figure 14- Contact us page
23

My account page:
Figure 15- My account page
Orders Page
Figure 16- Orders Page
24

P3.2- implement a web-enabled database management system to store, retrieve
and manipulate data in a web application
The database for the Argos is build using PHP Myadmin. These databases are shown by
taking the help of screenshots.
Product Page:
Figure 17- Product page database
Argos Database:
25

Figure 18- Argos database
26

Through this different features can be implemented which are shown below:
 Data Retrieval: The data involves the capacity to easily select the data of graphic or
attribute, updating, editing, querying, or display. It is the command interfaces which was
provided by the software.
 Data Manipulation: The Data Manipulation is the process of change the data to make it
easier to read and more be an organiser. A data manipulation Is a database language, in
the user can delete, modify, update, adding in the database. It makes specific entity easier
to locate.
 Data Store: The data store, usually used for storing and managing the files in the
database. Any files series of bytes are once stored are known as Data Store.
27

P3.3 Identify and implement opportunities for error handling and reporting for
the given case study
This Argos website is analysed by taking the help of different types of test cases. For that
error handling is shown by taking the help of different screenshots which are shown below:
Contact info error handling page:
Figure 19- Contact details error handling
If the user clicks on send button without entering the details inside the tabs then the error
message is going to come.
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Empty cart error
Figure 20- Empty cart error
If the cart is empty, then return to the shop is going to pop up. Through this user can easily
shop and add the products inside the cart.
29

No order error:
Figure 21- No order error
If user does not enter any order, then the Go shop link is going to come. Through this user
can easily shop and fill their cart.
30

LO4 Be able to test web applications
P4.1 Critically review and test a web application using a web enabled database
management system for the chosen company case study in task 2
User Acceptance: The User acceptance is also called End User Testing and Beta, and
Application and understanding that how the software works on the client site. It is the final
procedures of software project this testing was done before the final installation of the client
installation. User Acceptance Testing is where user checks all mistakes on the client site and
correcting the defects which are discovered in the software. The User Testing is the last step
when the software going to live, it involves many steps for a test case in the software and
result if the test case is Pass or Fail.
There are few steps are involved in User Acceptance Testing:
 Planning: In the UAT process should have a clear understanding of what is the
responsibility of each person.
 Designing: In this, UAT creates a test case. Data should be secure and private, and the
user should be familiar with the database flow.
 Documentation of Test Cases: The Documentation is a thing where us clearly defines
the responsibility for implementation of user feedback.
 Bug Fixing: In this, if the result is in hand after bug fixing then this process is also
known as Go/No- Go Decision, in this if the user is satisfied then GO and If not then its
No-Go.
Types of User Acceptance:
 Beta and Alpha Acceptance
 Contract Acceptance
 Regulation Acceptance
 Operational Acceptance (Economictimes, 2017)
Functional Testing: In Functional Testing, the tester verifies the specific function of the
codes. The functional testing should be manually and automation tools, but manual testing is
easier then automation tools. In testing, the functional testing executes first rather than the
non-functional testing. The testing is a process where evaluate the system compliance with
the specific requirements. The Functional Testing is a black box testing.
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Types of Functional Testing:
 Unit Testing
 Smoke testing
 User Acceptance Testing
 System Testing
There are five steps of Functional Testing:
 Prepare test database of the functions.
 In testing, the requirement of the business are the inputs of functional testing
 In testing, the functional testing finds out of output of the function
 Execute of test case
 At the last and final Step, in this, the user observe the output.
Check Against User Requirement:
In this requirement, the user analyses all requirement and what the client needs. The outline
testing testes by user acceptance testing and performance qualification. The user requirement
generally creates when business is planning and determine the needs. It is cannot be
combined with functional requirement document.
Browser compatibility testing:
The testing of the Argos website is done on different browsers. These screenshots are shown
below:
Chrome testing:
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Figure 22- Chrome browser Testing
Mozilla Browser testing:
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Figure 23- Mozilla testing
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Footer testing
Figure 24- Footer testing
In the above screenshot, the testing of the footer is shown.
Link testing
Figure 25- Link Testing
In the above screenshot, the link testing is shown. As user clicks on homepage then the
homepage is going to open.
Logo screenshot
Figure 26- Argos Logo
In the above screenshot logo of Argos is shown.
35

P4.2 Analyse actual test results against expected results to identify discrepancies
All the discrepancies are shown by taking the help of test results. For that different test cases
are done. These tests are shown by taking the help of the table which is shown below:
Table 1- Test Result
# Test Name Expected Result Actual Result Test Result
1 User click on About
Us link
About Us, page has to be
opened.
About Us page
open
Pass
2 User clicks on Add
to Cart.
That desired object has to
be inserted into the cart
section.
The desired
product enter
into the order
list.
Pass
3 When user click on
send button without
entering any details
An error has to be
generated.
The error is
generated down
the fields which
are not filled.
Pass
4 User clicks on the
checkout button on
the navigation menu
Check out page has to be
opened.
Check out page
opened
successfully
Pass
5 If no order is
selected by the user.
Then the checkout not
available error is going to
open.
Checkout error
is generated.
Pass
6 When user clicks on
special discount
button
Special discount page has
to be opened.
Special
discount page
opened
successfully.
Pass
7 When user clicks on
Contact us page
Contact us page has to
open.
Contact page
having all the
contact detail is
shown.
Pass
8 user search the
product in search
box
Desired product has to
open.
Desired product
is shown.
Pass
9 User clicks on
product image.
The image has to be
shown in a magnified
manner.
Magnified
image is shown.
Pass
1
0
User clicks on view
cart option
All the products that are
having all the
All product that
user selected is
shown
successfully.
Pass
1
1
User clicks on
PayPal button
PayPal page has to be
open
PayPal page
opens
Pass
36

P4.3 Critically evaluates independent feedback on a developed web application
and make recommendations for improvements
Evaluation of the Argos website is done by taking the help of the questionnaire. This
questionnaire is answered by many users. The questionnaire is made for different categories
are shown below:
About Product Page
Table 2- About Product Page
Questionnaire Answers(Yes/No)
Are you satisfied with our product? Yes
Does the product match the description? Yes
Would you recommend our product to a friend? Yes
What would you like most about the product? Men’s category
If you could add one thing about our product, what would
be it?
Electronic Gadgets
About Seller
Table 3- About Seller
Questionnaire Your Answer
What do you like least about
product?
Women’s section
How easy to use do you find a
product?
Very Easy
What do you like best our Website? Theme
How would you rate our Services? 4.5/5
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About Website
Table 4- About Website
Questionnaire Your Answer
How did you learn about this Website? From Relative
Would you recommend our website to a friend? Yes
Is the first time you used our Website? Yes
What do you like best our Website? Special discount page
How would you rate our Website? 5/5
About Services
Table 5- About Services
Questionnaire Your Answer
How would you rate our Support Service? 4/5
Would you use our service in the future? Yes
How satisfied are you with the service? Yes
What impressed you most about the service? Yes
38

P4.4 Creates user documentation for a developed web application in task 3
Programmer Guidances:
In this, the programmer creates an e-commerce website where the customer buys their
products via online or the website.
A home page is a start page of the website which was created by the programmer. At home
page, the programmer shows Menu Bar, Contact Us, Follow Us, Copyright of the Website,
Slider of the Product, Sign-In Option and Log Out, Add to Cart.
User Guidances:
The user first sees the main page of the website and see the products of various category and
see their contact option and add their products to the cart. After choosing the product the
customer first sign-in into the website to see various services of the website and then go to
the payment option for ordering the product. By the slide view, the user can see the discount
and offers of the products and see the fresh arrivals of the product.
 About us
The programmer guidance, in the about us page the programmer write about the aims and
objectives of the website and the add the contact details of the customer care support.
The user guidance, in the about us page the user reads about the website aims and
objectives and contact their customer care for services.
 Account Details
The programmer designs the account details for the customers where the customer adds
their account details and manage their details at any time. Also, they add their card
details. There is a dropdown list in Account Details, in drop-down list the programmer
designs the dashboards, orders, download, Addresses.
In the menu bar, the programmer adds the account details options where the user can add
their details. In this, the user can add their name, card details their date of birth. The user
can see the dashboard of the product and also see the orders and downloads the image and
order bills and Add their address details also.
 Log Out
The programmer adds the Logout option for the customer use when the user completes
their website they can log out from their account. By this option, the customer account is
also secure no one can shop from their account.
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By logging out the user safe their accounts from the hackers or thief, when they complete
their shopping then the customer can log out from their account.
 Orders
The programmer's design an order option where the user can see their orders and check
their order of the past and check their past bills. In this order option, the user can directly
order their product from the seller.
The user can see their order anytime also they can see their order tracking in this the
customer knows that their order was shipped or not. In order, option customer increase
and decrease their numbers of product.
 Follow Us
The programmer designs the website page for social media so that the user can see
website page on the social site.
By this option, the user can also follow the website on the social site also they get a
notification about products for new arrivals and offers.
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Conclusion
It can be concluded I have successfully implemented the website of Argos. This Argos
website is completed by taking the help of the WordPress. Database of the Argos website is
done by taking the help of PHP Myadmin. Different tests like cross browsers testing are
implemented on the website. For that website run on different platforms like Chrome and
Mozilla browsers.
Link test is also being implemented on the website. through this, it can be ensured that all the
links are working in a proper manner. Through this website, it can be ensured that all the
requirement of the Argos and users are fulfilled in a proper manner. The customer base of the
Argos is going to increase through this Argos website.
41

References
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 Digitalrise (2014). Advantages and Disadvantages of Visual Basic Language |
DigitalRise. [online] Digitalrise. Available at:
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