vanducng/skills · skills/dbdesign/SKILL.md

dbdesign skillA

dbdesign is agent-read markdown (skill) from vanducng/skills: Design and review production database schemas, data models, ERDs, migration plans, and storage patterns. Use for OLTP schema design, OLAP/star-schema modeling, fact/dimension tables, indexes, constraints, partitioning, multi-tenant data models, CSV/JSON-to-table design, schema review, migration risk review, and database design documents across PostgreSQL, MySQL, SQLite/D1, BigQuery, and MongoDB. Does not execute DDL by default..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add vanducng/skills/dbdesign@v1.0.0
Exact content
mdr add vanducng/skills/dbdesign@sha256:c54f48dd1e2b673c

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_qtead7wtfmck2arn.svg)](https://markdownregistry.com/a/art_qtead7wtfmck2arn)

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Versions

versioncommittedcommitsizeaudit
v1.0.0 latest2026-07-24 51405ee 4,905 BA view · diff
v1.0.02026-07-10 6f1e7cf 4,909 BA view · diff
v1.0.02026-06-19 464c98f 4,899 BA view · diff
v1.0.02026-06-11 7be3fb0 4,175 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4905 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

GitHub

vanducng/skills · 8 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qtead7wtfmck2arn
GET https://markdownregistry.com/api/v1/resolve?ref=vanducng/skills/dbdesign
GET https://markdownregistry.com/api/v1/blob/c54f48dd1e2b673c43ce3e3df27865dcdc2868aa20a5b44e1afd27c8d325b723

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.