Database Design Agent Skill
Database design principles and decision-making.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI --skill database-designWhat comes with it
11 654 bytes besides the instructionThe instruction itself
5 sections, as written by the authorDatabase Design
> Learn to THINK, not copy SQL patterns.
🎯 Selective Reading Rule
Read ONLY files relevant to the request! Check the content map, find what you need.
| File | Description | When to Read |
|------|-------------|--------------|
| database-selection.md | PostgreSQL vs Neon vs Turso vs SQLite | Choosing database |
| orm-selection.md | Drizzle vs Prisma vs Kysely | Choosing ORM |
| schema-design.md | Normalization, PKs, relationships | Designing schema |
| indexing.md | Index types, composite indexes | Performance tuning |
| optimization.md | N+1, EXPLAIN ANALYZE | Query optimization |
| migrations.md | Safe migrations, serverless DBs | Schema changes |
⚠️ 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
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How to use it
Take dokhacgiakhoa/database-design from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.