SQL Quest

Lessons, hints, explained solutions, the in-browser PostgreSQL editor and practice answer checks in your browser are available. Graded assessments, recorded progress from answer checks and new certificates aren't available yet.

Data Engineering Foundations

A foundation for data engineering work: schema design and integrity, transformation and cleaning, CTE pipelines, window functions, dimensional models, data-quality validation and performance. The capstones build a reporting dataset from a star schema and optimise queries on a large table. This pathway covers SQL foundations only, not orchestration or streaming tools.