Database Online Test

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The database online test assesses candidates' knowledge of SQL queries and relational database concepts, such as indexes and constraints.

It's an ideal test for pre-employment screening. A good database admin, back-end developer, or data analyst needs a solid understanding of SQL to interface and access an SQL database efficiently.

This online test requires candidates to write SQL queries that extract, combine, and manipulate data.

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Free Sample Questions for Database 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

3min

0-33%
34-67%
68-100%

Easy

CODE

SQL Aggregation Select 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

Solve Question

Enrollment

5min

0-33%
34-67%
68-100%

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.

Solve Question

Pets

5min

0-33%
34-67%
68-100%

Easy

CODE

SQL Select Union Public

Information about pets is kept in two separate tables:

TABLE dogs
  id INTEGER NOT NULL PRIMARY KEY,
  name VARCHAR(50) NOT NULL

TABLE cats
  id INTEGER NOT NULL PRIMARY KEY,
  name VARCHAR(50) NOT NULL

Write a query that select all distinct pet names.

See the example case for more details.

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Premium Questions for Database 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, Authors, Autocomplete, Ban Users, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Transactions, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, River Discharge, ATM Locations

Covered 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.

SQL Conditions Views Select Create Index Database Schema Performance Tuning Alter Table Constraints Create Table Aggregation Subqueries Ordering Bug Fixing Indexes Union Group by Update Insert Joins Left Join Right Join Delete SQL CASE CTE Database Normalization

Recommended Job Roles

These are the job roles that we recommend for the Database online test.

Data Analyst

Database Administrator

SQL Developer

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