Data Science Tutorials

This guide teaches you how to enforce clean and consistent data in MongoDB using schema validation, balancing flexibility with structure.

Learn how to work with SQLite’s dynamic type system and use features like type affinity, storage classes, and STRICT mode for better data integrity.

Uncover the fundamentals, structure, and significance of data cubes in modern data analysis and business intelligence.

Learn the mathematical foundations, computational properties, and real-world applications of the Hadamard product.

Learn about singular matrices, their properties, detection methods, and critical implications for machine learning and numerical computing.

Learn about the various tests possible in dbt to check and ensure data quality.

Discover how to create a MongoDB database from the shell or with a script, plus common pitfalls to avoid.

Learn how to use the c() function in R to combine values into vectors efficiently.

Round down with precision using Excel’s FLOOR() function. Perfect for pricing, scheduling, and more.

Master the basics of the Excel SQRT() function. Learn how to use SQRT() for quick square root calculations and address common errors.

Learn to work with Excel’s AVERAGE() function, including conditional and logical variations.

Learn how to use Snowflake's DATEADD function for date manipulation with real-world examples. Master time calculations, handle edge cases, and optimize performance in your SQL queries.