JDBC:
To connect to a database via JDBC, a driver file specific to a database type must be present on a user's machine. RazorSQL ships with JDBC drivers for several databases. RazorSQL also allows users to obtain JDBC drivers manually and use those drivers to communicate with a database.
JDBC drivers can be obtained, usually free of charge, from the database vendor' web site. After obtaining the drivers, connections to the database can be configured using the RazorSQL Connections -> Add Connection Profile menu option.