In this post, we will solve Basics of Sets and Relations #5 HackerRank Solution. This problem (Basics of Sets and Relations #5) is a part of HackerRank Databases series.
Task
Consider the following data table named Student.
Student Name Number Sex
Ben 3412 M
Dan 1234 M
Nel 2341 F
What is the count of rows returned in the following relational selection?
σ(Number<3000)(Student)
Only enter a single integer. Do not include any extra spaces or newlines.
Solution – Basics of Sets and Relations #5 – HackerRank Solution
2
Note: This problem (Basics of Sets and Relations #5) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.