A DBMS is software that monitors and maintains accurate, quality data in a data structure. It helps organizations optimize, store, retrieve and manage data in a database. A DBMS consists of a group of programs that manipulate the database and accept requests for data from an application or user. A DBMS can also provide security, redundancy, abstraction, and multiple views of the data. A DBMS that stores data in tables and uses relationships between them is called a relational DBMS or RDBMS. Some examples of popular DBMS software are PostgreSQL, Oracle Database, Microsoft SQL Server, MySQL, SQLite, IBM Db2, etc. References: What is DBMS? Database Management Systems, Explained, What Is a DBMS? - LearnSQL.com, Database management system (DBMS) | Definition & Facts.