1.oracle:
dirver: oracle.jdbc.driver.OracleDriver
url: jdbc:oracle:thin:@localhost:1521:orcl
scott/tiger
2.mysql:
driver: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/db_name?useUnicode=true&characterEncoding=UTF-8
username: root
password: 123456
3.sql server
driver: com.microsoft.jdbc.sqlserver.SQLServerDriver
url: jdbc:microsoft:sqlserver://localhost:1433;databaseName=walker
username: sa
password: