This collection focuses on the foundations that show up in day-to-day data engineering work: databases, schemas, data manipulation, constraints, and the habits that keep data reliable.
Modules
- MySQL Basics — /blog/data-engineering/my-sql-basics
What this collection covers
- Designing basic relational database schemas.
- Creating, inserting, updating, and deleting records safely.
- Handling missing values with
NULL. - Using constraints to protect data quality.
- Practicing SQL with small, realistic tables before moving to bigger pipelines.