SQLSERVER: Connection conn = DriverManager.getConnection("jdbc:sqlserver://localhost:1433", "sa", "******" );
Oracle: Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl","scott","******");
MySql: Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/mydata", "root", "******");
Vertica: Connection conn = DriverManager.getConnection("jdbc:vertica://localhost:5433/mydata", "******", "******" );