C++ Algorithms and SQL Online Test
TestDome skill assessments are used by more than 7,000 companies and 450,000 individual test takers.
For Jobseekers
Practice your skills and earn a certificate of achievement when you score in the top 25%.
Take a Practice TestFor Companies
Test how candidates think, strategize, and problem solve so you can interview the best.
Sign Up to Offer This TestTestDome Skill Assessments
Used by over 450,000 jobseekers
Trusted by over 7,000 companies
Premium questions with real-world problems
The C++ Algorithms and SQL online test assesses candidates' knowledge of SQL queries and evaluates their algorithmic-thinking skills using C++.
It's an ideal test for pre-employment screening. A good developer should be able to work closely with the database layer and solve back-end problems where any improvement to computational complexity would produce a significantly more efficient solution.
This online test requires candidates to design and analyze algorithms using C++ and to write SQL queries that extract, combine, and manipulate data.
TestDome is trusted by businesses large and small
Practice your skills.
Sign up for a trial plan.
Free Sample Questions for C++ Algorithms and SQL Test
Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.
Students
Given the following data definition, write a query that returns the number of students whose first name is John. String comparisons should be case sensitive.
TABLE students id INTEGER PRIMARY KEY, firstName VARCHAR(30) NOT NULL, lastName VARCHAR(30) NOT NULL
Enrollment
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.
Binary Search Tree
Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.
Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.
For example, for the following tree:
- n1 (Value: 1, Left: null, Right: null)
- n2 (Value: 2, Left: n1, Right: n3)
- n3 (Value: 3, Left: null, Right: null)
Call to contains(n2, 3) should return true since a tree with root at n2 contains number 3.
Practice your skills.
Pick the number of tests you need.
Pass/fail grouping
Our tests are designed to put candidates into either the pass group or the fail group so you can find the best candidates faster.
Full customization
We have pre-built tests and questions, but you can customize them however you like. Change the pass/fail scores, time requirements, and more.
Cheating protection
Use tests that solve real-world problems, with no answers that can be easily found online. Because we test performance and skills (not information), we allow the use of online resources, just like in real life. Copy/paste prevention and online proctoring via webcam prevent cheating.
Candidate reporting
Get an overview into the percentage of passes and fails. Then dive deeper into the results of your top candidates to select who goes onto the next phase of hiring.
Learn more
Sign up for a trial plan.
Premium Questions for C++ Algorithms and SQL Test
TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.
Question Names
These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.
Roads, Max Sum, Paper Strip, Ingredients, ATM Locations, Authors, Autocomplete, Ban Users, Bank Branches, Cheapest Product, Countries, Developers, Employee Manager, Veterinarian, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Movies Live, Projects, Rectangles, Restaurant Menu, Retirees, Sales, SMS Messages, Student Activities, Tasks, Transactions, Youngest Child, Internal Nodes, Platformer, Unique Product, Unique Numbers, Window Manager, Delete Orders, Book Sale, Friend, Average Salary, Movie Genres, Auto Show, Poll, Department Report, Stories, Student Rankings, Welfare Organization, Student Max Score, Moving Total, Agents, River Discharge, Users and Accounts, Matching Clothes, Manager SalesCovered Skills
Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.
SQLRecommended Job Roles
These are the job roles that we recommend for the C++ Algorithms and SQL online test.
Take or Offer the C++ Algorithms and SQL Online Test
For Jobseekers
Take a Practice TestFor Companies
Sign Up to Offer This TestHow TestDome works
1. Choose or create a test
2. Share your test via URL or email
3. Review overall results and pass/fail grouping
4. Dive deeper into individual results
Excellent support & free concierge service
We offer fast, hands-on support for any question or concern you might have. If you want help with building a custom test or inviting candidates, we’ll handle everything for you.
Contact Support for any questions or to request our free concierge service.
