Comprehensive SQL Databases Course
Dive deep into SQL for subscription-based systems. Learn to create effective schemas, develop advanced queries, optimise indexes, and set up production databases that drive invoicing, MRR/ARR reports, support metrics, and efficient tech solutions. This course equips you with skills for real-world database management and analytics.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
Gain expertise in SQL using practical subscription data in this focused, hands-on course. Design strong database schemas, set clear constraints, and craft reliable CREATE TABLE statements. Build fast queries for MRR, ARR, active subscriptions, overdue payments, and key metrics, while optimising indexes, handling migrations, creating realistic test data, and ensuring data quality for solid reporting and analysis.
Elevify advantages
Develop skills
- Advanced SQL analytics: quickly create complex MRR, ARR, and overdue reports.
- Production-ready schema design: structure subscription data using clean 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 anonymised test data using bulk insert methods.
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 workloadWhat our students say
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The platform is fast and easy to use. The variety of content and the extra videos really help with learning.

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