ORM Entity: Link to a table on another database?

Is it possible to have the table of an ORM entity to be linked to a table on another database, like this:

component persistent="true" table="anotherdb..tableonanotherdb" output="false" {

}

If not, what are my options if the app needs to be able to update the anotherdb..tableonanotherdb, instead of just viewing it (which I can simply set up a view for)?