database-schema-designer SKILL.md skillA
database-schema-designer from onewave-ai/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add onewave-ai/claude-skills/database-schema-designer@git:20260923.537406aPins git:20260923.537406a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- onewave-ai/claude-skills
- Path
database-schema-designer/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260923.537406a, committed Sep 23, 2026
- First version recorded
- Oct 22, 2025
- Size
- 6,262 bytes
- Repository stars
- 421
- License
- MIT
Designs relational and document database schemas from requirements or an existing app - tables and collections, keys, relationships, constraints, indexes driven by real query patterns, ERDs, and reversible migration scripts - with PostgreSQL (including Supabase) as the default and MySQL, SQLite, and MongoDB supported. Use when the user wants to model data for a new app or feature, review or fix an existing schema, choose keys or indexes, plan multi-tenancy, normalize or denormalize, or write…
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 Schema Designer Design a schema that enforces the data's rules in the database and makes the app's real queries fast. ## Workflow 1. **Collect requirements.** Get from the conversation or codebase, and ask only for what blocks the design: - Engine and version (default: PostgreSQL 18; check `docker-compose.yml`, ORM config, or Supabase project if present) - Entities and how they relate, in plain language - The 5-10 most frequent or most important queries, including filters and sort order - Volume and growth (rows per table per year), read/write mix - Tenancy (single app, multi-tenant by organization), retention, audit, and compliance needs (PII, deletion requests) - ORM or migration tool in use (Prisma, Drizzle, Rails, Django, Alembic, Supabase migrations, plain SQL) 2. **Model entities and relationships.** List entities, attributes, and cardinality (1:1, 1:N, N:M). Normalize to 3NF by default; denormalize only for a named query that needs it, and say which. …
Read the whole file at its exact version.
How to install
mdr add onewave-ai/claude-skills/database-schema-designer@sha256:8807c7f705b4e9a4The line at the top of this page pins the label git:20260923.537406a, 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.
[](https://markdownregistry.com/a/art_p47wivpgzmjm3cn2)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 22, 2025 and Sep 23, 2026, about one every 168 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.537406a latest | 2026-09-23 | 537406a | 6,262 B | A | view · diff |
| git:20260608.d82d20f | 2026-06-08 | d82d20f | 2,118 B | A | view · diff |
| git:20251022.14b7f5b | 2025-10-22 | 14b7f5b | 9,044 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6262 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
onewave-ai/claude-skills · 421 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_p47wivpgzmjm3cn2 GET https://markdownregistry.com/api/v1/resolve?ref=onewave-ai/claude-skills/database-schema-designer GET https://markdownregistry.com/api/v1/blob/8807c7f705b4e9a4bf219dcc02184fa1f872af3e249081819470e48fd0f47b84
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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