Relational database management system
![The general structure of a relational database.](/Images/godic/202502/06/RDBMS_structure3736.png")
A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as invented by E. F. Codd, of IBM's San Jose Research Laboratory. In 2015, many of the databases in widespread use are based on the relational database model.