Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Database 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)
…
The line at the top of this page pins the label git:20260502.38d5305, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_htnhcetnk2i5glva
GET https://markdownregistry.com/api/v1/resolve?ref=vodailocz/kilo-kit-mcp/database-design
GET https://markdownregistry.com/api/v1/blob/efb8ec6b79641214f751a886ce75cfdb36f78b4b296473ab3f090081470fad28
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svngoku/coding-agents-skills · skills/database-design/SKILL.md · Design relational database schemas (and choose when to go NoSQL) that stay maintainable and fast. Use this skill…