Ruby and SQL Online Test

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The Ruby and SQL online test assesses candidates' knowledge of programming in the Ruby language as well as their ability to use SQL.

It's an ideal test for pre-employment screening. A good Ruby developer needs to not only solve problems using Ruby but also write and analyze SQL queries used for communication with the database.

This online test requires candidates to solve coding problems in Ruby and to write SQL queries that extract, combine, and manipulate data.

Recommended Job Roles

Ruby Developer

Back-End Developer

SQL Developer

Web Developer

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Sample Free Questions

Students

3min

Easy

CODE

SQL Aggregation Public

Given the following data definition, write a query that returns the number of students whose first name is John.

TABLE students
   id INTEGER PRIMARY KEY,
   firstName VARCHAR(30) NOT NULL,
   lastName VARCHAR(30) NOT NULL

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Enrollment

5min

Easy

CODE

SQL Conditions Update Public

A table containing the students enrolled in a yearly course has incorrect data in records with ids between 20 and 100 (inclusive).

TABLE enrollments
  id INTEGER NOT NULL PRIMARY KEY
  year INTEGER NOT NULL
  studentId INTEGER NOT NULL

Write a query that updates the field 'year' of every faulty record to 2015.

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Palindrome

10min

Easy

CODE

Ruby Strings Public

A palindrome is a word that reads the same backward or forward.

Write a function that checks if a given word is a palindrome. Character case should be ignored.

For example, is_palindrome("Deleveled") should return true as character case should be ignored, resulting in "deleveled", which is a palindrome since it reads the same backward and forward.

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Questions

Movies, Index Performance, Tasks, Poll, Rectangles, Document Store, Read Write Execute, Needle, Category Tree, Products, Numbers to Text, Crop Ratio, Programmer Teacher, Greeter, Retirees, Authors, Countries, Employee Manager, Paragraph, Merge Stock Index, Username, Chain Link, Hobbies, Cheapest Product, Shipping, Segment, Movies Live, Ranges, Read First Line, ATM Locations, Autocomplete, Ban Users, Department Report, Developers, Ingredients, Delete Orders, Restaurant Menu, Roads, Sales, Student Activities, Transactions, Projects, Hospital Patients, Bank Branches, Menu Items, Date Transform, Log Patch, Youngest Child, SMS Messages

Skills

SQL Aggregation Subqueries Indexes Joins Conditions Ruby Bug fixing Language Arithmetic Strings Stream Data structures Serialization Sorting OOP Insertion Union Arrays Iteration Ranges Exceptions Constraints Database Schema Performance tuning Update Delete Views Monkey Patching

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Simple, straight-forward technical testing

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Easy to use and efficient for testing developers of different levels

It provides us an opportunity to set our own timing policy, to choose from variety of questions from different areas and with difficulty gradation. Also it is great that TestDome provides free of charge tests for candidates to prepare and check how online IDE works. And support is always ready to help:)

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