Databases – Relational Calculus – HackerRank Solution

In this post, we will solve Databases – Relational Calculus HackerRank Solution. This problem (Databases – Relational Calculus) is a part of HackerRank Databases series.

Task

We execute the following query (in Relational Calculus) on a set of integers S.
For the given set S, what will be the answer? Fill up the answer box with the required integer.

S = {4,5,6,7,10,11,19,18,3}

Solution – Databases – Relational Calculus – HackerRank Solution

19

Note: This problem (Databases – Relational Calculus) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.