TheVault

TheVault is a custom relational database engine built from scratch in Java, designed to power a multi-bank banking application. This project implements core database concepts including custom B+ Tree data structures for efficient storage and retrieval, a complete relational schema with tables and indexes, password salting and hashing, and a clean MVC architecture supporting multiple concurrent users with a monolithic banking architecture.

The system features a banking domain with full CRUD operations for users and accounts, secure authentication, transaction logging, and multi-bank management capabilities. Built with Docker containerization and comprehensive test coverage, TheVault demonstrates practical application of computer science fundamentals including data structures, algorithms, system design, and software engineering principles.

Key Technologies: Java, Docker, JUnit 5, Custom B+ Tree Implementation, Relational Database Design

Clone the Repository

git clone https://github.com/JacobLef/TheVault

Docker Configuration: Build and Run

docker build -t banking-database .    

docker run -p 8080:8080 banking-database

To use docker compose instead:

docker compose up

To use docker compose started in the background:

docker compose -d up

Work in progress

• This project is still a work in progress. There are bugs to be worked out and more features to implement.
• Bugs to fix: BPlusTree is not correctly shifting elements around. DataBase is untested. Commands are untested. Missing command to register a Bank with the Database before you can start using them, so the CLI is technically unusable.
• Features to be added: logging, caching, networking (possibly)