SQL & NOSQL: A Brief History
![](https://blog.grio.com/wp-content/uploads/2015/11/cap-categories1-e1448487683191.png)
The Relational Model & SQL
The relational model was proposed in a paper published in 1970 by Edgar Codd, a computer scientist working at IBM. In previous years, some storage systems had already emerged, but the relational model was first proposed with a strong theoretical basis.