Build and Refine Dimensional Models Visually

AI-powered Kimball modeling with an interactive visual builder. Paste your source schema, get a complete star schema in seconds — then drag, edit, and export.

datamodelassistant.com accepts SQL DDL statements, CSV files, and ERD screenshots as input and generates complete Kimball star schemas or Data Vault 2.0 models using AI. The interactive visual builder lets you drag, edit, and refine tables and relationships, then export to PostgreSQL, Snowflake, BigQuery, Mermaid ERD, or full documentation.

Everything You Need for Dimensional Modeling

Visual ERD Builder

Drag-and-drop fact and dimension tables. Edit columns inline, draw relationships, and auto-layout your star schema.

AI-Powered Modeling

Paste your source schema and get a complete Kimball dimensional model in seconds. Refine with follow-up chat.

Export & Save

Export SQL DDL, Mermaid ERD diagrams, and full model documentation. Save your work and iterate.

Frequently Asked Questions

What input formats does datamodelassistant.com support?

The tool accepts SQL DDL statements, CSV files, and ERD screenshots via Vision AI. Paste your DDL directly or upload a file to get started.

Which dimensional modeling methodologies does the tool use?

datamodelassistant.com generates Kimball star schemas and Data Vault 2.0 models. You can specify your preferred methodology in the chat, and the AI applies the correct grain, hub, satellite, and link patterns accordingly.

Does the tool support source schemas from enterprise systems?

Yes. The AI has specific knowledge of SAP FI/CO, Salesforce, Oracle EBS, and Workday source schemas and applies the correct grain and foreign key relationships for those systems.

What can I do in the visual builder?

After the AI generates a model, you can drag tables, edit column names and data types inline, draw or remove relationships, and auto-layout the diagram. Changes update the underlying model in real time.

What export formats are available?

Models export to PostgreSQL, Snowflake, and BigQuery DDL SQL, Mermaid ERD syntax, and full documentation in Markdown.

Can I try the tool without creating an account?

Yes. The interactive demo at /demo runs without an account and lets you paste a source schema and see a generated dimensional model immediately.

Simple, Transparent Pricing

One plan with everything you need.

Save 67%
$39.99/year

$3.33/mo — best value

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