Create an Express App. Use PostgreSQL as database and Sequelize as ORM.
Create migration files and model files by understanding the DBML file content: https://github.com/TrueSparrowSystems/sirji-demos/blob/master/2-routes-and-models-from-specs/DBML.txt
Create API routes in modular files by understanding the OpenAPI specs file content: https://github.com/TrueSparrowSystems/sirji-demos/blob/master/2-routes-and-models-from-specs/OpenAPI.yml