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Data Warehouse Online Test

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

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 how data warehouses are designed, how to convert a relational model to a snowflake or star schema, and how to work with OLAP cubes.

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Free Sample Questions for Data Warehouse Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Daily News Performance

3min
  -  
Easy 
  -  
MCA

Data Warehouse Drilldown OLAP Operations Pivot New Public

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:

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

(Select all acceptable answers.)

Lumber Cut

3min
  -  
Easy 
  -  
MCA

Data Warehouse Software architecture New Public

A construction supply company wants to implement a data warehouse to analyze the performance of their online portal for ordering custom cuts of lumber.

Their sales data is currently stored in two separate transaction processing relational databases, one contains inventory and the other one contains sales data. Both databases save their data in a normalized schema. One of the reasons for implementing a data warehouse is that querying the databases for average sales data and inventory status through time is slow and causes some online transactions to timeout.

How should the data warehouse be implemented?

(Select all acceptable answers.)

Grocery Sales

5min
  -  
Easy 
  -  
MCA

Data Warehouse Star schema New Public

A grocery shop is using the following tables in their relational database:

TABLE Product 
  id INTEGER
  name VARCHAR
  categoryId INTEGER REFERENCES ProductCategory(id)

TABLE ProductCategory 
  id INTEGER
  name VARCHAR

TABLE ProductSale
  id INTEGER
  productId INTEGER REFERENCES Product(id)
  price DECIMAL
  date DATE

The company has decided to implement a data warehouse since their analytic queries have started causing issues by consuming most database resources.

As a first step, the company wants to create a star schema of the previous tables. Which tables should be present in the star schema?

(Select all acceptable answers.)

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Premium Questions for Data Warehouse 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.

Shoe Store, Baby Supplies, Low Readership, Golf Club, Underpublishing Content
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.

Data Warehouse Snowflake schema OLAP cube Dice OLAP Operations Pivot Software architecture Drilldown Slices
Recommended Job Roles

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

Big Data Engineer
Data Warehouse Administrator
Data Warehouse Developer

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