AI Star Schema Diagram Generator
Name the business process and the AI proposes the fact table, its grain, and the dimensions around it, with columns and keys filled in
No sign-up required • Free to try
Example
Star Schema Diagram example, generated from one sentence
Prompt: “Star schema for retail sales: fct_sales at line-item grain with date, store, product, customer, promotion dimensions”
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Frequently Asked Questions
Common questions about ai star schema diagram generator
Does the AI understand grain and conformed dimensions?▼
Yes, state the grain in the prompt ("one row per order line") and it lands as an annotation on the fact table. Ask for conformed dimensions across two facts and both fact tables will connect to the same dimension nodes, the way a bus-matrix design intends.
Can it handle slowly changing dimensions?▼
Tell it which dimensions are SCD Type 2 and it adds the effective_from / effective_to / is_current columns and notes the versioning strategy on the node, so the modeling decision is visible in the diagram rather than buried in a doc.
Star schema or snowflake schema: can I compare both?▼
Generate the star version first, then ask the AI to snowflake a dimension (split product into product → subcategory → category) and you can see both shapes side by side before committing to one.
Can I export this into my design doc?▼
Export as PNG or JPEG for slides and docs, or embed a live link in Notion or a README that stays in sync when the model evolves, useful once the schema review starts producing changes.
I already have the tables. Can I paste the DDL?▼
Yes. Paste the CREATE TABLE statements (fact_ and dim_ prefixes, or Fact/Dim names) and the star is drawn exactly from them: the fact in the centre, dimensions around it, keys marked. Warehouse DDL without foreign keys gets its links from the key names, drawn dashed.
Can it build a star schema from source tables like SAP or Salesforce?▼
Name the source tables (VBAK, VBAP, KNA1, MARA, or Opportunity and Account) and the business process, and the AI proposes the fact grain, the dimensions, and a note mapping which source tables feed which fact.
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