Data Warehouse Diagram Generator

Design data warehouse architectures with dimensional modeling, ETL processes, and BI reporting layers

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Example

Data Warehouse Diagram example, generated from one sentence

Prompt: “Snowflake data warehouse with dbt transformations and Tableau reporting”

Data Warehouse Diagram example generated by Datadef: Snowflake data warehouse with dbt transformations and Tableau reporting
Open this example on the canvas →Every box, arrow and label is editable, and the result exports to PNG or embeds live.

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Further reading:Data warehouse design guideDimensional modeling guide

Frequently Asked Questions

Common questions about data warehouse diagram generator

Can I diagram star schema and snowflake schema models?▼

Yes! Create dimensional models showing fact tables at the center connected to dimension tables. Visualize star schemas with denormalized dimensions or snowflake schemas with normalized dimension hierarchies.

Which data warehouse platforms are supported?▼

We support Snowflake, Amazon Redshift, Google BigQuery, Azure Synapse Analytics, Databricks SQL, Teradata, Oracle, SQL Server, and more. Also supports cloud data lakes acting as data warehouses.

How do I show ETL vs ELT processes?▼

For ETL, show transformation happening before loading (Informatica, Talend, SSIS). For modern ELT, show raw data loaded first, then transformed using tools like dbt, Dataform, or warehouse-native SQL transformations.

Can I visualize data marts and subject areas?▼

Absolutely! Show how enterprise data warehouse feeds multiple departmental data marts. Visualize subject-oriented data marts for sales, finance, marketing, each with their own dimensional models.

How do I represent slowly changing dimensions (SCD)?▼

Add metadata to dimension tables indicating SCD type (Type 1, 2, or 3). For Type 2, show how historical records are maintained with effective dates and current flags. Essential for tracking dimension changes over time.

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