You should watch this asianometry video on the birth of SQL, very interesting, and in fact a functional approach, based on relational algebra and tuple relation

You should watch this asianometry video on the birth of SQL, very interesting, and in fact a functional approach, based on relational algebra and tuple relational calculus, was originally what the father of the concept intended for interacting with the db. Other IBM engineers formulated the SQL language over that. The precursors to sql rdbms, and the war over competing concepts, were also quite thought provoking. https://www.youtube.com/watch?v=z8L202FlmD4 https://www.youtube.com/watch?v=z8L202FlmD4