Relational database management system

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.

Many popular databases currently in use are based on the relational database model.

RDBMSs are a common choice for the storage of information in new databases used for financial records, manufacturing and logistical information, personnel data, and other applications since the 1980s.

Relational databases have often replaced legacy hierarchical databases and network databases because they are easier to understand and use.

Non-relational databases

Non-relational databases include:

• Object databases, which were introduced in an attempt to address the object-relational impedance mismatch in relational databases
• XML databases

External links

• Relational database management system @ Wikipedia