Comprehensive SQL Databases Course
This course teaches you to master SQL for subscription-based systems. You will create effective schemas, develop advanced queries, optimise indexes, and set up production databases that drive invoicing, MRR/ARR reports, support metrics, and efficient tech applications. Perfect for building reliable data systems in real-world scenarios.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain mastery in SQL for handling subscription data through this practical course. Design strong database schemas, set exact constraints, and craft reliable CREATE TABLE statements. Build fast queries for MRR, ARR, active subscriptions, overdue payments, and support data, while optimising indexes, handling migrations, creating test data, and ensuring data quality for solid reports and analysis.
Elevify advantages
Develop skills
- Advanced SQL analytics: quickly create complex reports for MRR, ARR, and overdue accounts.
- Production-ready schema design: structure subscription data using clean, normalised 3NF tables.
- Strong constraints and keys: apply business rules via foreign keys, checks, and unique constraints.
- High-performance indexing: optimise queries with composite and covering indexes.
- Secure data seeding: produce realistic test data using bulk insert methods.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
Your classes are perfect. I got the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... thank you for everything you do, I've already recommended you to others...

Giulio CarloDigital Marketing Student
I like how the lessons get straight to the point and how I can switch chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way the videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast and easy to use. The variety of content and the extra videos really help with learning.

Giulio CarloPrompt Engineering Student
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