The relational model is the dominant model for developing database applications.
It was proposed in 1970 by E.F. Codd (IBM) with the first commercial system appearing in 1981-82. It appears in several commercial and open source implementations.The relational model is the dominant model for developing database applications.
It was proposed in 1970 by E.F. Codd (IBM) with the first commercial system appearing in 1981-82. It appears in several commercial and open source implementations.