Apache Derby

Apache Derby is a lightweight, open-source database management system written in Java. It allows applications to store, retrieve, and manage data efficiently within their environment, often used in small to medium-sized projects or embedded devices. Derby runs inside the application's process, making setup simple and resource-friendly without requiring a separate database server. It supports standard SQL queries, ensuring compatibility with many tools and applications. Overall, Derby provides a reliable, easy-to-integrate solution for managing structured data in Java-based systems.