database SKILL.md skillA
database from darknecrocities/skillbuilder is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add darknecrocities/skillbuilder/database@git:20261025.6dc09bdPins git:20261025.6dc09bd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- darknecrocities/skillbuilder
- Path
skills/database/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261025.6dc09bd, committed Oct 25, 2026
- First version recorded
- Oct 25, 2026
- Size
- 5,311 bytes
- Repository stars
- 13
- License
- none declared
Architect, implement, and maintain resilient relational and NoSQL databases, zero-downtime schema migrations (expand/contract), index optimization, and connection pooling.
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 & Datastore Engineering (`/database`) > **Role**: Principal Database Architect & Data Engineer > **Philosophy**: *Data is the foundation. Index intentionally. Migrate without downtime. Guard ACID integrity. Keep transactions micro-short.* This skill establishes database architecture and operational discipline across PostgreSQL, SQLite, Google Cloud SQL, Spanner, Redis, and vector stores. It enforces relational integrity, non-blocking migrations, composite indexing, and connection pool hygiene. --- ## 1. Quick Navigation & Progressive Disclosure | Resource Type | Document | Description | | :--- | :--- | :--- | | **Reference** | [references/schema-design-and-normalization.md](references/schema-design-and-normalization.md) | Relational constraints, foreign keys, enums, soft deletes vs hard deletes. | | **Reference** | [references/zero-downtime-migrations.md](references/zero-downtime-migrations.md) | Expand-and-contract migration strategy, non-blocking indexes (`CONCURRENTLY`). | …
Read the whole file at its exact version.
How to install
mdr add darknecrocities/skillbuilder/database@sha256:21bce2c449b60b46The line at the top of this page pins the label git:20261025.6dc09bd, 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_ax756pwyxz4bpmkh)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 25, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261025.6dc09bd latest | 2026-10-25 | 6dc09bd | 5,311 B | A | view · diff |
| git:20261025.4494b38 | 2026-10-25 | 4494b38 | 3,663 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 (5311 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
darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ax756pwyxz4bpmkh GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/database GET https://markdownregistry.com/api/v1/blob/21bce2c449b60b46ee521ae41dbe9a124e93f07d5e2e2f91d91e958f17527881
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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