Bukkit

Currently released Database Handler, if you would like to use any given Handler, just change database.handler in your Configuration to the class of your Databasehandler.

MySQL:

Developed by: manf
Download: Included since Version 3.0
Class: 'tk.manf.InventorySQL.database.handler.MySQLDatabaseHandler'
URL-Syntax: 
'jdbc:mysql://[HOST]:[PORT]/[DATABASE]?user=[USER]&password=[PASS]'

Custom implementation:

Implement the following Interface.