Comprehensive SQL Databases Course
Dive deep into SQL for subscription-based systems. Learn to create effective schemas, develop sophisticated queries, optimise indexes, and construct robust databases that drive invoicing, MRR/ARR insights, support analytics, and performant applications in real-world tech environments. This course equips you with production-level skills for reliable data management and high-impact reporting across business operations.

4 to 360 hours flexible workload
valid certificate in your country
What will I learn?
Gain expertise in SQL using practical subscription datasets in this focused, hands-on programme. Design solid database schemas, apply strict constraints, and craft reliable CREATE TABLE scripts. Develop optimised queries for MRR, ARR, active subscriptions, overdue payments, and key metrics, plus optimise indexes, handle schema changes, create lifelike test data, and ensure data integrity for dependable reporting and analysis.
Elevify advantages
Develop skills
- Advanced SQL analytics: rapidly create intricate MRR, ARR, and overdue reports.
- Production-ready schema design: structure subscription data using normalised 3NF tables.
- Strong constraints and keys: implement business logic via foreign keys, checks, and unique constraints.
- Performance-focused indexing: enhance query speed with composite and covering indexes.
- Secure data seeding: produce realistic anonymised test data using efficient bulk inserts.
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
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