To be able to connect to an external database you need to specify settings for the database. This is done in the Database tab of the preferences window, accessed by selecting File | Preferences.

This window have four settings:

• Driver - Don’t change anything here. It should be “com.mysql.jdbc.Driver”
  

• URL - Should contain the string “jdbc:mysql://ADDRESS” where ADDRESS is an address to your database.
  

• User name - Your user name for the database in question.
  

• Password - your password for the database in question.

After the settings are properly filled in you must press the Apply and test button to make sure the connection works.

• Preferences
• Parameter databases
• Exporting and importing data