Premium Project

Answering Business Questions using SQL

For this project, we’ll step into the role of data analysts for the Chinook online music store to analyze sales data and answer business questions using advanced SQL queries.

Start Project
4.8 (359 reviews)
366,013 learners enrolled in this project
  • Intermediate
  • Jupyter project
  • 8 steps
  • SQL
Lisa Reiber

“The projects helped me apply what I learned and understand how to tackle all the little things that come along in real life.”



Lisa Reiber

Data Analyst

Answering Business Questions using SQL

Enroll For Free

Project overview

In this project, you’ll assume the role of a data analyst for the Chinook online music store. You’ll use advanced SQL skills like subqueries, multiple joins, set operations, and aggregate functions to analyze sales data and answer real business questions.

This practical project allows you to apply SQL to extract insights from a complex database. You’ll write queries to pull relevant data, create visualizations to understand trends, and provide data-driven recommendations to business stakeholders. Prior SQL knowledge is required.

Objective: Use SQL to analyze sales data, visualize insights, and provide business recommendations for the Chinook online music store.

Key skill required

To complete this project, it's recommended to build these foundational skills in SQL

  • Joining data across multiple tables using SQL joins
  • Writing complex SQL queries to analyze data
  • Organizing SQL queries using formatting and views
  • Connecting to and querying SQLite databases from R

Projects steps

Step 1: Introduction and Schema Diagram

Step 2: Creating Helper Functions

Step 3: Selecting Albums to Purchase

Step 4: Analyzing Employee Sales Performance

Step 5: Analyzing Sales by Country

Step 6: Visualizing Sales by Country

Step 7: Albums vs. Individual Tracks

Step 8: Next Steps

Master skills faster with Dataquest

Go from zero to job-ready

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Showcase your path certification

Share the evidence of your hard work with your network and potential employers.

The Dataquest guarantee

Guarantee

Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.

Money

We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Recommended projects

Free

Investigating Fandango Movie Ratings

Practice using R to analyze movie ratings data, compare 2015 vs 2016 ratings, and apply sampling and distributions to investigate bias.

R Intermediate 8 steps
View Project
Free

Investigative Statistical Analysis – Analyzing Accuracy in Data Presentation

Practice statistical analysis in Python to investigate movie rating bias and determine if Fandango inflated ratings.

Python Intermediate 8 steps
View Project
Free

NYC Schools Perceptions

Practice data cleaning, analysis, and visualization in R to explore survey data and showcase your skills with R Notebooks.

R Beginner 3 steps
View Project
Free

Building Fast Queries on a CSV

Practice implementing an inventory system for a laptop store using Python classes, dictionaries, and binary search.

Python Intermediate 10 steps
View Project
Free

Garden Simulator Text Based Game

Practice using OOP, error handling, and randomness in Python to create an interactive gardening game simulator.

Python Beginner 11 steps
View Project
Free

Predicting Heart Disease

Practice building a K Nearest Neighbors classifier in Python to predict heart disease risk from patient data.

Python Intermediate 10 steps
View Project
Free

Word Raider

Practice using Python variables, lists, loops, conditionals, and file handling to build an interactive word-guessing game.

Python Beginner 11 steps
View Project
Free

Predicting Condominium Sale Prices

Practice using linear regression in R to predict condominium sale prices based on size and location in New York City.

R Intermediate 8 steps
View Project
Free

Kaggle Data Science Survey

Practice analyzing survey data in Python to uncover insights about data science careers and skills.

Python Beginner 8 steps
View Project

Grow your career with
Dataquest.

98%
of learners recommend
Dataquest for career advancement
4.85
Dataquest rating
SwitchUp Best Bootcamps
$30k
Average salary boost
for learners who complete a path
Aaron

Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”

Jessi

Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”

Victoria

Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”

Join 1M+ data learners on
Dataquest.

1

Create a free account

2

Choose a learning path

3

Complete exercises and projects

4

Advance your career

Start learning today

Sign Up For Dataquest