The document details the development of a web application for a multinational financial conglomerate to manage foreign currency exchange transactions efficiently. Key features include real-time currency conversion to Mauritian Rupee, ad-hoc reporting, and user role management for admins, managers, and cashiers. The project overcame challenges related to currency conversion and secure data transfer, utilizing a four-tier architecture and various technologies to ensure functionality and user accessibility within four months.

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Case Study
Web Application to Facilitate Foreign Currency
Exchange

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The client is a multi-national financial conglomerate who demanded a reliable tool to facilitate the
actual process of managing the currency conversion transactions. The application provides quick
and easy access to the currency positions at any point and also ensures data integrity along with
providing online reports in compliance with Central Bank.
The application is designed and developed to accurately convert any currency into MUR (Mauritian
Rupee) according to the latest currency price and gives accurate output after calculating the
commission for each transaction. The application’s highlight is its ad-hoc reporting capability.
The application user’s are as follows:
Admin: The Admin users will create role and grant access to everyone in the system. They can
also track and report activity carried out throughout the system.
Manager: The Manager will track the available currency and total transactions performed in a
day. He is also responsible for creating an opening balance with each cashier as he solely allots
currency to each cashier for transaction processing.
Cashier: The Cashier is basically the users that record transactions in the system and deal with
customers. They share records with the Manager and are also responsible for closure activity for
each day.
The application is divided into following accounts:
Master-Till Account: This account maintains the record of the total currency collected along with
the master record of branch’s overall earning.
Swift Bank Account: The application converts travel cheque’s directly into the currency. The
customers can demand bank for currency transfer which is handled through Swift Bank Account.
Suspense Account: During daily closure, Cashier checks the amount and if there is any
erroneous transaction it is subjected under Suspense Account and is rectified.
Client Requirement
Project Challenges
The challenges faced were:
 Converting a currency into multiple currencies.
 Transferring currencies via. Swift Account by applying complex calculations and
deducting commissions behind every transaction.
 Calculating average value of the currency purchased.
 Ensuring secure transfer of data.

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Technologies Used
Manpower
Planning
Keeping in mind the structure of the website and the challenges involved, a four-tier
development approach was adopted consisting of:
 The Database layer containing MSSQL Server Database, Tables, Stored Procedures and so
on.
 The Interface layer and Database Abstraction layer for converting data between
incompatible type systems in databases and accessing data from the database respectively.
 The Business Logic layer consisting of all the business logic procedures for interactive
modules.
 The User Interface layer which forms the Graphical User Interface of the website.
Operating System &
Server Management
Windows OS, Multi-Server Architecture with Staging & Production
Environment through Version Controlling releases, Server
Optimization, Security & SSL Implementation, Scheduler for Back-ups,
Alert Monitoring System Integration, Server Performance Tuning at
regular intervals, Software Firewall Configuration & Maintenance
Development Tools &
Environments
.Net Framework 4.0, JavaScript, JQuery, Microsoft Visual Studio,
HTML, CSS etc.
Database MSSQL Database Server, DB Clustering, DB Optimization, Master
Slave Replication, Query Optimization, Scheduler for Backups
Project Leader 2
Developers 3
Designers 2
Quality Assurance Testers 2

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Architecture
Development Highlights
The site was equipped with a robust architecture to offer centralized access to multiple users.
Customizable viewing options were designed to enhance user experience and allow personalization.
Access control and other security measures were taken care off. The web application was
developed keeping the SEO-promoted architecture in mind. Also, the reporting flow chart was used
to show profit and loss charts. Web usability guidelines were strictly followed during development
and the interface was made easily navigable through judicious use of HTML and CSS controls. The
site was developed and fully functional within a span of 4 months.