Bank Management System

A CLI-based Bank Management System built with Python 3 and SQLite. This project simulates a real-world console banking application with secure user authentication, transactional histories, and a fully functional admin dashboard.

Features

• Customer Operations: Register, Login, Deposit, Withdraw, Transfer, Check Balance, Transaction History, and Change PIN.
• Admin Operations: View all customers, search by account/mobile, freeze/unfreeze accounts, delete accounts, view total bank balance and global transactions.
• Security: User PINs are stored securely using SHA-256 hashes. Inputs are validated properly.
• Persistence: SQLite database (bank.db) seamlessly manages data persistence across restarts.

Tech Stack

• Language: Python 3
• Database: SQLite (built-in)
• Encryption: hashlib (built-in)

How to Run

1. Make sure you have Python 3 installed.
2. Open your terminal or command prompt.
3. Navigate to the project folder.
4. Run the application:

   python main.py

Default Credentials

For administrative tasks, use the following credentials:

• Admin Username: admin
• Admin PIN: admin123

File Structure

• main.py: Entry point, contains the interactive menus and navigation.
• database.py: Handles database initialization and connection routing.
• auth.py: Authentication, PIN validation, and registration logic.
• customer.py: Customer dashboard operations (deposit, withdraw, transfer).
• admin.py: Administrative operations (freeze, view transactions).
• transaction.py: Transaction logging and retrieval handlers.
• utils.py: Shared utilities (hashing, terminal clearing, input validation).