This Data Warehouse and SQL Online Test
Separates Good From Bad Hires

Screen with work-sample questions

Work-samples are the best predictor of work performance. 8,000+ companies use TestDome premium questions.

About the test

The Data Warehouse and SQL online test assesses candidates' knowledge of data warehouses and their ability to use SQL.

It's an ideal test for pre-employment screening of candidates applying for roles such as Big Data Engineers, Data Warehouse Developers, and Data Warehouse Administrators.

This online test requires candidates to answer multiple-choice questions about data warehouses and to write SQL queries that extract, combine, and manipulate data.

Sample public questions

Management of a multinational news company would like to see how the number of viewers of different news sections varies per country, for each day.

The data is in an OLAP cube and needs to be transformed to get the data the management is looking for. Below are the diagrams of starting and expected OLAP cubes:

An OLAP cubeAn OLAP cube

What operations should be performed to transform the first OLAP cube into the second OLAP cube?

Data Warehouse
Drilldown
OLAP Operations
Pivot
Easy
3 min
mca
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
SQL
Aggregation
Select
Easy
3 min
code
Public

For jobseekers: get certified

Earn a free certificate by achieving top 25% on the Data Warehouse and SQL test with public questions.

Take a Certification Test

Sample silver certificate

Peter Gibbons

Java and SQL

TestDome
Certificate

TestDome logo on certificate

For companies: premium questions

Buy TestDome to access premium questions that can't be practiced.
Get money back if you find any premium question answered online.

Sign Up to Offer this Test

45 more premium Data Warehouse and SQL questions

Shoe Store, Golf Club, 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, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, River Discharge, ATM Locations, Transactions, Baby Supplies, Underpublishing Content, Low Readership.

Skills and topics tested

  • Data Warehouse
  • Snowflake Schema
  • Software Architecture
  • 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
  • OLAP Cube
  • Drilldown
  • OLAP Operations
  • Slices
  • Dice
  • Pivot

For job roles

  • Big Data Engineer
  • Data Warehouse Administrator
  • Data Warehouse Developer

Solve all your skill testing needs

150+ Pre-made tests

From web development and database administration to project management and customer support. See all pre-made tests.

Multi-skills Test

Mix questions for different skills or even custom questions in one short test. See an example.

How TestDome works

1
Choose a pre-made test or create a custom test.
2
Invite candidates via email, URL or your ATS
3
Candidates take a test remotely
4
Sort candidates and get individual reports

Want to know more?

Not exactly what you're looking for?

Related Data Warehouse and SQL Programming Tests: