I hava DAO classes to access tables of a Derby db. My DAO's all implement there own interface. I knew I would need to learn what this was. Is anyone farmiliar with
how an application would use an interface for the DAO classes ? I use xml properties to
connect to derby and I think (a year ago) I intended to use the power of the interface
to work with my DAOFactory.java that announces the data base to be used. I was wondering
if someone had experience writing an app that could use the DAOFactory class to switch
the database and properties sheet to switch form An embedded Derby database to a MySQl type
of database. What would this Interface I mentioned do to work with there DAO object?