A database management system (DBMS) is software that helps users create, manage, and manipulate databases. It provides tools for storing data, retrieving it efficiently, and ensuring data integrity. DBMSs support various data models, such as relational, hierarchical, and object-oriented, allowing users to organize information in a way that suits their needs. DBMSs also offer features like data security, backup, and recovery, which protect data from loss or unauthorized access. Popular examples of DBMSs include MySQL, Oracle, and Microsoft SQL Server. These systems are essential for businesses and organizations that rely on data for decision-making and operations.