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Software Requirements Specification (SRS) for Lump Sum Investment Calculator

Introduction

Purpose:

The purpose of this document is to outline the requirements for the development of a Lump Sum Investment Calculator application. This application estimates the future value of a lump sum investment over time, assisting users in making informed financial decisions.

RecordID (Primary Key, Auto-increment)
InitialInvestmentAmount (Decimal)
ExpectedAnnualInterestRate (Decimal)
InvestmentDuration (Integer)
EstimatedFutureValue (Decimal)
CalculationDate (DateTime)

Scope:

The Lump Sum Investment Calculator will allow users to input details such as the initial investment amount, expected annual interest rate, and investment duration. The system will calculate and display the estimated future value of the lump sum investment.

System Overview

System Description:

The Lump Sum Investment Calculator will be a web-based application accessible through a browser. It aims to provide users with insights into the potential growth of a lump sum investment based on their input parameters.

System Architecture:

The application will follow a client-server architecture, with the client being the web browser and the server handling the lump sum investment calculation logic.

Functional Requirements

Use Cases:

Calculate Future Value:

  • Users can input details such as the initial investment amount, expected annual interest rate, and investment duration.
  • The system will calculate and display the estimated future value of the lump sum investment.

Functional Requirements:

Input:

The system shall accept the following input:

  • Initial Investment Amount (in INR)
  • Expected Annual Interest Rate (in percentage)
  • Investment Duration (in years)

Calculation:

  • The system shall calculate the estimated future value based on the provided initial investment amount, expected annual interest rate, and investment duration.

Output:

  • The system shall display the estimated future value of the lump sum investment to the user.

Non-Functional Requirements:

  • The system should provide a response time of under 3 seconds.
  • The application should be accessible on common web browsers (Chrome, Firefox, Safari).

External Interface Requirements

User Interfaces:

  • The user interface shall include input fields for the initial investment amount, expected annual interest rate, and investment duration, along with a “Calculate” button.
  • The calculated estimated future value shall be displayed prominently.

Hardware Interfaces:

  • The system should be compatible with standard computing hardware.

Software Interfaces:

  • The application shall be developed using HTML, CSS, and JavaScript.
  • The server-side logic can be implemented using a backend framework (e.g., Node.js, Django).

Communication Interfaces:

  • The application will communicate with the server for the lump sum investment calculation and display of results.

Performance Requirements

Response Time:

The system should respond within 3 seconds for a typical user input.

Throughput:

The application should handle at least 50 simultaneous users.

System Constraints

Regulatory Requirements:

The application should comply with relevant financial regulations.

Hardware Limitations:

The system should be compatible with devices with standard web-browsing capabilities.

Security Requirements

Authentication:

The application may or may not require user authentication, depending on whether users want to save their lump sum investment calculation data.

Data Protection:

If authentication is implemented, user data should be stored securely.

Quality Attributes

Reliability:

The application should produce accurate results based on the provided input.

Maintainability:

The code should be well-documented for ease of maintenance.

Usability:

The code should be well-documented for ease of maintenanc

Testing Requirements

 Test Cases:

Test cases should cover various scenarios with different initial investment amounts, expected annual interest rates, and investment durations to ensure accurate estimated future value calculations.

Test Case 1:

  • Inputs: Initial Investment Amount = 1,00,000 INR, Expected Annual Interest Rate = 8%, Investment Duration = 5 years.
  • Expected Output: Estimated Future Value ≈ 1,48,882 INR

Test Case 2:

  • Inputs: Initial Investment Amount = 2,50,000 INR, Expected Annual Interest Rate = 6%, Investment Duration = 8 years.
  • Expected Output: Estimated Future Value ≈ 4,16,243 INR

Test Case 3:

  • Inputs: Initial Investment Amount = 5,00,000 INR, Expected Annual Interest Rate = 10%, Investment Duration = 10 years.
  • Expected Output: Estimated Future Value ≈ 13,189,222 INR

Acceptance Criteria:

The application is considered successful if it produces correct estimated future values based on the provided lump sum investment inputs.

Project Timeline

Milestones:

Design, Development, Testing, Deployment.

Development Phases:

Frontend development, Backend development, Testing, Deployment.

Glossary

None

Database Structure

 Tables:

Lump_Sum_Investment_Calculator_Records:

  • RecordID (Primary Key, Auto-increment)
  • InitialInvestmentAmount (Decimal)
  • ExpectedAnnualInterestRate (Decimal)
  • InvestmentDuration (Integer)
  • EstimatedFutureValue (Decimal)
  • CalculationDate (DateTime)

Conclusion

This extended SRS document provides a more detailed overview of the Lump Sum Investment Calculator application, including the database structure and additional test cases. It should be reviewed and approved by relevant stakeholders before proceeding with the development phase.

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