DBMS – Data Base Management System

RDBMS – Relational Data Base Management System or Relational DBMS

DBMS has to be persistent, does not impose any constraints or security with regard to data manipulation. In DBMS  it is programmer responsibility to ensure the ACID PROPERTY

DBMS Examples– File System, XML

RDBMS adds the additional condition that the  system supports a tabular structure of the data, with enforced relationships between the tables. RDBMS defines the integrity constraint for the purpose of holding ACID PROPERTY.

RDBMS Examples– SQL Server, Oracle.