A database management system (DBMS) is a software package for creating and managing databases. It helps users to store, retrieve, query and manage data into the database.
The primary purpose of a DBMS is

Well-known DBMSes include:
Ms Access – a lightweight relational database management system (RDMS) included in Microsoft Office.
Amazon RDS – a native cloud DBMS that offers engines for managing MySQL, Oracle, SQL Server, PostgreSQL and Amazon Aurora databases.
Apache Cassandra - an open-source distributed database management system known for being able to handle massive amounts of data.
MySQL – an open-source relational database management system (RDBMS) owned by Oracle.
MariaDB - an open-source fork of MySQL.
Oracle - a proprietary relational database management system optimized for hybrid cloud architectures.
SQL Server – an enterprise-level relational database management system from Microsoft that is capable of handling extremely large volumes of data and database queries.
Statlearner
Statlearner