database-designer SKILL.md skillA
database-designer from borghei/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add borghei/claude-skills/database-designer@v1.1.0Pins v1.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- borghei/claude-skills
- Path
engineering/database-designer/SKILL.md- Versions recorded
- 7
- Latest version
- v1.1.0, committed Oct 23, 2026
- First version recorded
- Mar 30, 2026
- Size
- 6,739 bytes
- Repository stars
- 1,075
- License
- a license file GitHub does not identify
Database design with schema analysis, index optimization, and migration generation for PostgreSQL, MySQL, MongoDB, and DynamoDB. Use when designing schemas, optimizing queries, planning migrations, or analyzing database performance.
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 Designer The agent analyzes SQL schemas for normalization compliance, recommends optimal indexes based on query patterns, and generates safe migration scripts with rollback procedures. It produces Mermaid ERDs, detects redundant indexes, and implements zero-downtime expand-contract migration patterns for PostgreSQL and MySQL. ## Core Capabilities - **Schema analysis** — detect normalization violations (1NF-BCNF), missing constraints, naming issues, and data-type problems from DDL or JSON. - **ERD generation** — produce valid Mermaid entity-relationship diagrams from declared relationships. - **Index optimization** — recommend indexes from query patterns, order composite columns by selectivity, detect redundant/overlapping indexes, and find covering-index opportunities. - **Migration generation** — forward + rollback SQL between schema versions, with validation queries. - **Zero-downtime migrations** — expand-contract pattern with safe backfill for tables with 10M+ rows. - **Database selection guidance** — match workload requirements to PostgreSQL, MySQL, MongoDB, or DynamoDB. ## When to Use - Designing or reviewing a new schema for normalization and constraints. …
Read the whole file at its exact version.
How to install
mdr add borghei/claude-skills/database-designer@sha256:0bb4ef69fb1034b4The line at the top of this page pins the label v1.1.0, 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_2z2dz3lnrvm7sdui)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Mar 30, 2026 and Oct 23, 2026, about one every 34 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.0 latest | 2026-10-23 | 2b5180a | 6,739 B | A | view · diff |
| v1.1.0 | 2026-10-23 | cd5632b | 6,636 B | A | view · diff |
| v1.1.0 | 2026-06-22 | 65b93aa | 6,530 B | A | view · diff |
| v1.1.0 | 2026-06-17 | 8980a67 | 5,798 B | A | view · diff |
| v1.0.0 | 2026-06-17 | 0c19211 | 14,172 B | A | view · diff |
| v1.0.0 | 2026-04-02 | d83e68b | 14,202 B | A | view · diff |
| v1.0.0 | 2026-03-30 | 6b5a5d8 | 28,031 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 (6739 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
borghei/claude-skills · 1,075 stars · license a license file GitHub does not identify · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2z2dz3lnrvm7sdui GET https://markdownregistry.com/api/v1/resolve?ref=borghei/claude-skills/database-designer GET https://markdownregistry.com/api/v1/blob/0bb4ef69fb1034b4b3729611b0a0812cad148288e622ef6008bdcfd4c4d7aa33
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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