Database Management System, usually the abbreviation DBMS is used. It is a universal term for software that forms an intermediate layer between applications and stored data. Its role is to work effectively with large amounts of data, it must be able to store the data, modify, delete, and execute queries. DBMS for relational database is sometimes referred to as RDBMS.
Note: Sometimes it is incorrectly and simply referred to as a database system, in fact database system = database management system + data. For the average user, this difference is irrelevant.
DBMS in practice: Database Management System is an integral part of the vast majority of applications, especially enterprise applications with multiple layer architecture. The role of DBMS increases with the size of the database, the number of users and distribution of databases in different locations (typical for large multinational organizations and web portals).