Computer Science
Databases & SQL
5 free resources, hand-picked and sorted so you can find the right fit for your level and time.
YouTube
Staff pick
Fireship (Jeff Delaney) · YouTube / Fireship
7 Database Paradigms
A punchy 10-minute overview of seven database types - relational document key-value graph wide-column time-series and s… No prerequisites View C Website David J. Malan & Carter Zenke · edX / HarvardCS50's Introduction to Databases with SQL
Harvard's dedicated SQL course - CRUD normalisation joins indexes views and connecting SQL to Python. Real-world datase… No prerequisites View D Website Jennifer Widom · Stanford Online / edXDatabases: Relational Databases and SQL
Stanford's foundational database course - relational model SQL schema design constraints and transactions. Free to audi… No prerequisites View I Website Khan AcademyIntro to SQL: Querying and Managing Data - Khan Academy
A gentle browser-based intro to SQL - creating tables inserting data querying and JOINs - with exercises at every step.… No prerequisites View
YouTube
Fireship (Jeff Delaney) · YouTube