database-design SKILL.md skillC
database-design from atnexuslab/tightship is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add atnexuslab/tightship/database-design@git:20261015.8e86e2cPins git:20261015.8e86e2c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 14 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- atnexuslab/tightship
- Path
content/skills/database-design/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261015.8e86e2c, committed Oct 15, 2026
- Size
- 13,821 bytes
- Repository stars
- 4
- License
- MIT
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
+++ name = "database-design" description = "Use when modeling data, writing a schema or a migration, or designing queries — keys, constraints, NULL semantics, tenancy, indexes, transactions, safe migrations. Engine-agnostic." +++ # Database Design ## When to use Designing a schema, adding or altering tables/collections, writing a migration, choosing keys or indexes, or designing the queries that read and write the data. **Scope.** This skill decides the *model and the guarantees*: what the data means, what must always be true, and what a change costs. Engine, ORM, and migration tooling are the repository's decisions and live in its own `AGENTS.md`. `NULL` semantics, transactions, and constraints are concepts here, not syntax — express them however the chosen engine does. ## Method 1. **List the access patterns first.** Every read and write the application will actually perform, with its filters, sort, and expected volume. A model designed without them is a guess. 2. **Name the entities and their relations** — cardinality, optionality, and which side owns the link. A structural model takes its shape from the product's functional source and is born complete; only …
Read the whole file at its exact version.
How to install
mdr add atnexuslab/tightship/database-design@sha256:3d4f8a11c74173e6The line at the top of this page pins the label git:20261015.8e86e2c, 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_ve3ythlkhy5n45b3)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 15, 2026.
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13821 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
atnexuslab/tightship · 4 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ve3ythlkhy5n45b3 GET https://markdownregistry.com/api/v1/resolve?ref=atnexuslab/tightship/database-design GET https://markdownregistry.com/api/v1/blob/3d4f8a11c74173e65c63ca7b2bac7e4663d683620a820b72884b00fe4047d70c
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.
More from atnexuslab/tightship
Every file in atnexuslab/tightship