Database Design for Builders

Name: Database Design for Builders
Price: 69 USD
Availability: InStock

Most developers learn SQL syntax but never learn how to design a database. This course fills that gap: how to model real-world data relationships, when to normalize vs denormalize, how indexes actually work and when to add them, how to write migrations safely, and how to use Row Level Security in Supabase to enforce access control at the database layer.

Prerequisites: Some programming experience

Start free lessons

$69one-time · lifetime access

What you'll learn

✓How to model real-world data — entities, attributes, relationships, and drawing ERDs before writing SQL

✓Normalization in practice — 1NF, 2NF, and 3NF explained plainly, and when to break the rules deliberately

✓Keys, constraints, and foreign key ON DELETE behaviour — the discipline of NOT NULL and check constraints

✓Indexes that actually help — B-tree mechanics, EXPLAIN ANALYZE, partial indexes, and covering indexes

✓Designing for SaaS — multi-tenancy patterns, a complete SaaS schema, and ULID vs UUID

✓Row Level Security patterns — database-enforced access control that application bugs cannot bypass

✓Migrations without drama — forward-only migrations, safe column changes, and zero-downtime deploys

✓Schema for real products — a complete worked Invoice Manager SaaS schema from scratch

Course outline

Free — no account needed

Thinking in Tables

What deserves a table, what deserves a column — and the relationships between them

9 minFree

Normalization in Practice

1NF, 2NF, and 3NF explained plainly — and when to break the rules deliberately

10 minFree

Full course — $69 one-time

Keys, Constraints, and References

Primary keys, foreign keys, ON DELETE behaviour, and the discipline of NOT NULL

10 min

Indexes That Actually Help

How B-tree indexes work, when Postgres uses them, and when they slow you down

11 min

Designing for SaaS

Multi-tenancy patterns, a complete SaaS schema, and per-tenant configuration with JSONB

11 min

Row Level Security Patterns

Lock down your data at the database layer — so application bugs cannot expose other tenants

11 min

Migrations Without Drama

Forward-only migrations, safe column changes, and zero-downtime deploys against live data

11 min

Schema for Real Products

A complete schema review — what you built, what breaks at scale, and how to think beyond MVP

14 min

Get the full course

8 lessons — from entity modelling to RLS policies, safe migrations, and a complete production SaaS schema.

✓ 8 lessons✓ Production Postgres patterns✓ Certificate

$69one-time