While discussing data models, my colleague was sketching tables and their relationships in an editor: table A, table B, columns linking them. He then generated

While discussing data models, my colleague was sketching tables and their relationships in an editor: table A, table B, columns linking them. He then generated SQL from the diagram and deployed the schema to PostgreSQL. The schema was shared and reviewed. The tool is https://dbdiagram.io https://dbdiagram.io You can import/export SQL and generate images of your schema.