Database Design

Database Design

Learn to THINK, not copy SQL patterns.

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⚠️ Core Principle

• ASK user for database preferences when unclear
• Choose database/ORM based on CONTEXT
• Don't default to PostgreSQL for everything

Decision Checklist

Before designing schema:

• [ ] Asked user about database preference?
• [ ] Chosen database for THIS context?
• [ ] Considered deployment environment?
• [ ] Planned index strategy?
• [ ] Defined relationship types?

Anti-Patterns

❌ Default to PostgreSQL for simple apps (SQLite may suffice) ❌ Skip indexing ❌ Use SELECT * in production ❌ Store JSON when structured data is better ❌ Ignore N+1 queries