DB2 is a relational database management system (RDBMS) developed by IBM. It is designed to store, retrieve, and manage data efficiently, making it suitable for various applications, from small businesses to large enterprises. DB2 supports SQL (Structured Query Language) for querying and managing data, allowing users to perform complex operations easily. DB2 offers features such as data security, scalability, and high availability, which are essential for modern data management. It can run on multiple platforms, including Windows, Linux, and Unix, and supports both on-premises and cloud deployments, making it a flexible choice for organizations looking to manage their data effectively.