With the relational databases model, the place and the way data is stored are not relevant (unlike other models such as the hierarchical and network).
This has the considerable advantage that it is easier to understand and use for an occasional user of the database.
The information can be retrieved or stored by “consultations” that provide broad flexibility and power to manage information.
The most common language for building queries to relational databases is SQL, Structured Query Language, a standard implemented by the main database management systems or relational databases.
During design, a relational database undergoes a process which is known as a standardized database.
During the 80′s the emergence of dBASE was a revolution in programming languages and database management systems.