Comprehensive SQL Databases Course
This course teaches SQL skills for subscription-based systems. Learners will create database designs, develop advanced queries, optimize indexes, and set up reliable databases to support billing, revenue tracking like MRR and ARR, customer service measures, and efficient software needs. It provides hands-on practice for production environments, ensuring data integrity and high performance across real-world applications.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain mastery in SQL for handling subscription records through this practical course. Craft strong database structures, set clear rules, and create solid CREATE TABLE scripts. Develop fast queries for monthly recurring revenue, annual recurring revenue, active accounts, late payments, and service stats, plus optimize indexes, handle updates, add real test info, and check data accuracy for dependable reports and analysis.
Elevify advantages
Develop skills
- Advanced SQL reporting: create detailed MRR, ARR, and overdue reports quickly.
- Strong schema building: structure subscription info using normalized 3NF designs.
- Reliable rules setup: apply foreign keys, checks, and unique constraints for business logic.
- Optimized indexing: improve query speed with composite and covering indexes.
- Secure test data: produce masked realistic data via bulk inserts safely.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
Your classes are perfect. I purchased the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... I appreciate everything you do, I've already recommended you to others...

Giulio CarloDigital Marketing Student
I like how the lessons are 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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