4

Software Requirements Specification (SRS) for Post Office Savings Calculator

Introduction

Purpose:

The purpose of this document is to define the requirements for the development of a Post Office Savings Calculator. This web-based application aims to calculate the maturity amount and interest earned on various post office savings schemes.

Scope:

The Post Office Savings Calculator will provide users with an interface to input details such as the type of savings scheme, principal amount, tenure, and other relevant parameters. The application will calculate and display the maturity amount and interest earned.

System Overview

System Description:

The system will be a client-server application. Users will access the Post Office Savings Calculator through a web browser. The server will handle the logic for savings calculations based on different post office schemes.

System Architecture:

The application will follow a three-tier architecture: presentation layer (client-side browser), application layer (server-side processing), and data layer (storage and retrieval of data).

Functional Requirements

Use Cases:

Calculate Maturity and Interest:

  • Users can select the type of post office savings scheme.
  • Users will input details such as principal amount, tenure, and other relevant parameters.
  • The system will calculate and display the maturity amount and interest earned based on the selected savings scheme.

Functional Requirements:

Input:

The system shall allow users to select the type of post office savings scheme and enter the following details:

  • Principal Amount (Decimal)
  • Tenure (Integer or Date)
  • Other Relevant Parameters (if applicable)

Calculation:

  • The system shall calculate the maturity amount and interest earned based on the selected savings scheme and user-input details.

Output:

  • The system shall display the calculated maturity amount and interest earned to the user.

External Interface Requirements

User Interfaces:

  • The user interface shall consist of dropdowns or radio buttons for selecting the type of post office savings scheme and input fields for principal amount, tenure, and other relevant parameters, along with a “Calculate” button.
  • The calculated maturity amount and interest earned shall be displayed prominently.

Hardware Interfaces:

  • The system should be compatible with standard computing hardware.

Software Interfaces:

  • The application will be developed using HTML, CSS, and JavaScript for the frontend.
  • The backend can be implemented using a server-side framework (e.g., Node.js, Django) with a database for data storage.

Communication Interfaces:

  • The application will communicate with the server for savings calculations.

Performance Requirements

Response Time:

  • The system should provide a response time of under 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 supporting standard web browsers.

Security Requirements

Authentication:

  • User authentication may be implemented for personalized features.

Data Protection:

  • User data, if stored, should be securely protected.

Quality Attributes

Reliability:

  • The application should provide accurate maturity amount and interest earned calculations based on the entered details.

Maintainability:

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

Usability:

  • The user interface should be intuitive, requiring minimal guidance.

Testing Requirements

Test Cases:

Test cases should cover various scenarios with different savings schemes, principal amounts, tenures, and other parameters to ensure accurate maturity amount and interest earned calculations.

Test Case 1:

  • Inputs: Scheme = Monthly Income Scheme, Principal Amount = 50,000 INR, Tenure = 5 years.
  • Expected Output: Maturity Amount ≈ 68,750 INR, Interest Earned ≈ 18,750 INR.

Test Case 2:

  • Inputs: Scheme = Public Provident Fund (PPF), Principal Amount = $10,000, Tenure = 15 years.
  • Expected Output: Maturity Amount ≈ $27,508, Interest Earned ≈ $17,508.

Test Case 3:

  • Inputs: Scheme = Senior Citizens Savings Scheme (SCSS), Principal Amount = 1,00,000 INR, Tenure = 7 years.
  • Expected Output: Maturity Amount ≈ 1,61,402 INR, Interest Earned ≈ 61,402 INR.

Acceptance Criteria:

  • The application is considered successful if it produces correct maturity amount and interest earned estimates based on the provided details.

Project Timeline

Milestones:

Design, Development, Testing, Deployment.

Development Phases:

Frontend development, Backend development, Testing, Deployment.

Glossary

None

Database Structure

Tables:

PostOfficeSavings_Calculator_Records:

  • RecordID (Primary Key, Auto-increment)
  • UserID (Foreign Key, if user accounts are implemented)
  • SchemeType (Text)
  • PrincipalAmount (Decimal)
  • Tenure (Integer or Date)
  • OtherParameters (Text)
  • MaturityAmount (Decimal)
  • InterestEarned (Decimal)
  • CalculationDate (DateTime)

Conclusion

This SRS document outlines the requirements for the Post Office Savings Calculator. It serves as a guide for the development team and ensures that the application meets the specified criteria. Review and approval by relevant stakeholders are essential before proceeding with the development phase.

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