Final answer:
A DBMS stands for database management system, which is a software tool for managing data in databases. Option 2 is the correct answer.
Step-by-step explanation:
A DBMS stands for a database management system. This is a software tool that is used to store, retrieve, update, and manage data in databases. The correct option is 2) database management system. A DBMS provides users with the capabilities to create databases, define their structure, manipulate data, and set up rules to validate and manipulate this data.
It also ensures the security and integrity of the databases. Database systems such as MySQL, Oracle, and Microsoft SQL Server are examples of popular DBMS software.