// 5 courses indexed

The course directory

Every course we track across 10+ providers, in one searchable index. Want a shortlist picked for your goals? Run a free skill gap analysis.

Learn SQL with PostgreSQL — queries, joins, aggregation, and database design.

Beginner

Master MongoDB queries, aggregation, indexing, and integration with Node.js.

All levels

Learn Python, Django, APIs, and databases to start a career as a back-end developer.

Beginner

Advanced PostgreSQL: schema design, indexes, transactions, and performance tuning.

Intermediate

Entity-relationship modeling, normalization, and star schemas.

Intermediate