Examples
postgres.properties
jdbcUrl=jdbc:postgresql://localhost:5432/test
jdbcDriver=org.postgresql.Driver
oracle.properties
jdbcUrl=jdbc:oracle:thin:@localhost:1521:XE
jdbcDriver=oracle.jdbc.driver.OracleDriver
user=system
password=manager
The settings in this file are overwritten by the environment variables DB_USER (overwrite user), DB_PASSWORD (overwrite password)
Driver class must exist in the classpath.