An insightful look into skills, qualities, and values, favorite applications, and the future of structured databases
Olga Berezovsky
Building complex and advanced SQL queries for data analysis, data manipulation, and modeling
Olga Berezovsky
How to measure A/B test success, and why product experiments can be tricky and not always effective.
Olga Berezovsky
A recap of data analysis publications, news, and tutorials over the past month.
Olga Berezovsky
Some common Python interview questions for hiring data analysts and data scientists
Olga Berezovsky
A close look at Customer Acquisition Cost, how to calculate it, and ways to improve CAC and user growth.
Olga Berezovsky
Learn how to install a database and practice SQL on your own to nail take-home assignments and interview questions
Olga Berezovsky
A recap of data analysis publications, guides, and news over the past month. 
Olga Berezovsky
An insightful look into some of the biggest challenges for data analysts, and how to overcome them while building a data-driven culture
Olga Berezovsky
How to break down user activity by day of the week in SQL
Olga Berezovsky
How and when to apply revenue forecasting for data analysis
Olga Berezovsky
A recap of data analysis publications, news, and tutorials over the past month.
Olga Berezovsky