This project is a sample of using database migrator such as a Liquibase for creating standalone application-migrator for you system.
DataSource connection settings are in resources/application.yml. There are a simple Spring DataSource configuration. Now migrator is used for perform migrations to a PostgreSQL database, but you can simple change it by adding some jdbc driver to pom.xml and change DataSource configuration.
Then application start, Spring create a Liquibase bean, which perform a migrations from resources/db.
changelog-master.xml is a main migration descriptor.