NestJS-mod application integrates Postgres database and runs migrations using Flyway. The database is lifted via Docker Compose, with manual migration scripts written for Flyway. The application has its own username and password, separate from the root credentials. This integration enables efficient management of database schema changes.

Source: https://dev.to/endykaufman/adding-the-postgres-database-to-the-project-and-running-migrations-via-flyway-for-the-nestjs-mod-application-1fao