As a person learning calculus, I always get frustrated by considering the practical applications of it. In an interview Larry Ellison said this about relational database programming:
"Relational database technology was invented by a guy by the name of Ted Codd at IBM. It's based on relational algebra and relational calculus. It is a very mathematically rigorous form of data management that we can prove mathematically to be functionally complete."
Could someone possibly explain or direct me towards where I can find out precisely how databases can be linked to calculus/maths?
Any input is much appreciated.