Generating test data based o real data and artificial intelligence

I want to know techniques or tools to generate test data based o real data, but it should be achieved in automatic and intelligent ways. Maybe a tool that can read a database and use artificial intelligence to learn about data patterns to generate data test based on it.

Do you have any suggestions about tools or other materials?

Note: I don't want to describe the data patterns by using a DSL, I want to do it automatically.

Regards, Alexandre