Can I use it to document multi-column constraints?

Yes, the skill includes a specific format for adding multi-column constraints immediately following the attribute tables.

Does this skill add attributes to the Mermaid diagram?

No, per its design principles, the Mermaid diagram focus strictly on entity relationships to maintain visual clarity, while attributes are detailed in dedicated tables.

What kind of data types are supported?

The skill supports standard database types including Long, String, Integer, Decimal, Boolean, Date, and DateTime with specific length and precision guidelines.

How does it handle validation rules?

It uses a standardized set of rules such as Primary Key/Sequence, Not Null, Unique, Foreign Key references, and range/value constraints to ensure data integrity.

AI Data Modeler

Name: AI Data Modeler
Author: martinellich

bymartinellich

•

Database Management

Generates comprehensive entity model documentation featuring Mermaid.js ER diagrams and standardized attribute tables.

The Data Modeler skill streamlines the database design process within Claude Code by automating the creation of professional entity-relationship documentation. It enforces a strict, clean documentation structure that separates high-level relationship visualization via Mermaid.js from granular technical specifications. By providing pre-defined data types and validation rules, it ensures that every entity is documented with consistent precision, making it an essential tool for software architects and developers transitioning from requirements to implementation.

Key Features

01Standardized 5-column attribute tables for rigorous data definition.

02Structured validation rules for primary keys, foreign keys, and constraints.

034 GitHub stars

04Todo-driven workflow to ensure complete coverage of all required entities.

05Automated Mermaid.js ER diagram generation focused on entity relationships.

06Built-in reference for SQL-compatible data types and lengths.

Use Cases

01Converting functional requirements into technical database schemas.

02Creating visual architecture maps for complex data relationships.

03Generating documentation for database-first development workflows.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add martinellich/aiup-marketplace data-modeler

For use in Claude.ai and ChatGPT

Download Skill