Data Science Educational Resources
StrataScratch is a data science educational platform with over 1,000+ real interview questions from your favorite companies.
Advanced SQL Concepts to Improve Your and Code’s Performance
In this article, we’ll discuss advanced SQL concepts and their use cases. Then we’ll use them to answer interview questions from reputable employers.
Irakli Tchigladze -
How to Simplify Complex SQL Queries (With Examples)
In this article, we’ll discuss various ways to simplify complex SQL queries and apply these tips to answer difficult SQL interview questions.Irakli Tchigladze -
Real-World AI Projects That Will Change The Future
List of top AI projects that can be applied to the problems of the real world for a wide range of Data Scientists, from beginners to experts.
Nathan Rosidi -
SQL Scenario Based Interview Questions and Answers
SQL scenario based interview questions to learn how to wrangle date time fields for Facebook data science interviews.
Sara Nobrega -
30+ Project Ideas to Showcase Your Machine Learning Skills
Here are 30+ machine learning project ideas ideal for showcasing and honing your ML skills. There’s something for everyone, from beginners to advanced levels.Nathan Rosidi -
Joining Multiple Tables in SQL - Examples and Walkthrough
We’ll show you how to use JOINs to join multiple tables in SQL and how choosing a specific type of JOIN can change the outcome of the query.Irakli Tchigladze -
Top 18 Python Libraries A Data Scientist Should Know in 2023
Maximize your data science potential with the top 18 python libraries every data scientist should know in 2023, from NumPy to PyTorch and with subsections.Nathan Rosidi -
SQL UNION vs UNION ALL: Differences You Need to Know
In this article, we’ll discuss differences and similarities between UNION vs UNION ALL, possible use cases, and compare the performance of two set operators.Irakli Tchigladze -
Python Cheat Sheet – Technical Concepts for the Job Interview
A quick reference Python cheat sheet for learning the common tasks. Data structures, functions, data wrangling – the basics any data scientist should know.
Vivek Sankaran -
Data Engineer SQL Interview Questions From Top Employers
In this article, we will list important SQL concepts and walk you through 10 data engineer SQL interview questions asked by employers like Google and Amazon.Irakli Tchigladze -
A Comprehensive Guide to CASE WHEN statements in SQL
Let’s explore the basic and advanced syntax of CASE WHEN statements in SQL and show how to use CASE statements to answer difficult interview questions in SQL.Irakli Tchigladze -
Machine Learning Algorithms Explained: Support Vector Machine
Brace yourself for a detailed explanation of the Support Vector Machine. You’ll learn everything you wanted and what you didn’t but really should know.Nathan Rosidi -