Various types of SQL Joins: inner join, left outer join, right outer join, full outer join, and cross join; and how to make them fast.
Newsletter Issue 6: Cheatsheets and decision trees to find the best visualization for your data and purpose
Difference between SQL and NoSQL database. Decision tree, cheat sheet to choose from RDBMS, columnar, key-value, wide column, document, graph, etc.
Scalable and efficient data pipelines are as important for the success of data science and machine learning as reliable supply lines are for winning a war.