Tool to auto populate data based on a dimensional model

Are there any tools that can be used to auto populate data into tables based on a dimensional model?

If it doesn't exist, may be this is  something some company can build and offer.

Various tools including ETL tools provide feature/component that can be used to generate dummy data based on schema definition.  What I am looking for is a tool to which we can provide a dimensional model (Facts and Dimensions), and target DB connection and that the tool is able to auto populate dummy data into the tables (Dimensions first and then Facts) accordingly maintaining all the relationships in tact. Tool should be able to create data for all SCD types and all types of Fact tables. 

A tool like this would help in speeding up prototyping, testing, visualizations, etc., so basically would speed the development and delivery. 

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