A DBMS, or Database Management System, is software that helps users create, manage, and manipulate databases. It provides a systematic way to store, retrieve, and organize data, ensuring that information is easily accessible and secure. Common types of DBMS include relational, NoSQL, and object-oriented systems, each designed for different data management needs. DBMS allows multiple users to interact with the database simultaneously while maintaining data integrity. It also offers features like data backup, recovery, and security measures to protect sensitive information. Popular examples of DBMS include MySQL, Oracle, and Microsoft SQL Server.