DBMS Database Management System is defined as the software program that is used to manage all the databases that are stored on the network or system hard disk.
The database system in which the relationships among different tables are maintained is called Relational Database Management System.
Both RDBMS and DBMS are used to store information in physical database. RDBMS solution is required when large amounts of data are to be stored as well as maintained. A relational data model consists of indexes, keys, foreign keys, tables and their relationships with other tables. Relational DBMS enforces the rules even though foreign keys are support by both RDBMS and DBMS.