How Does a Database Management System That Follows the Relational

question 32

Essay

How does a database management system that follows the relational model handle entities, attributes of entities, and relationships between entities?

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Definitions:

Inverse Function

A mathematical function that reverses the effect of another function, such that if the function f applied to an input x gives a result of y, then applying its inverse function to y gives the result x.

Function

An interrelation between a variety of inputs and a catalog of admissible outputs, with the requirement that every input is pinpointed to a unique output.

Composition

The process of combining two functions by applying one function to the result of another, typically notated as (f◦g)(x).

Function

A scheme relating a bundle of inputs with a spectrum of viable outputs, under the condition that each input is matched with one output exclusively.