Database Manager Singleton. Database Manager Singleton. Stores database connections that need to be accessible throughout the application. Add a Database. If [code]set_as_default[/code] is true it will be set as default, which means it will be set to the [member ddb] property. Returns a Database. Returns how many databases are stored in the singleton. Returns all Databases. Calls the [code]initialized[/code] signal. Not implemented currently. Will likely load databases from ProjectSettings. Calls the [member migration] signal. Removes a Database. The default database. Emitted when a [Database] is added. Emitted when a [Database] is removed. Emitted when default database is changed. Can be emitted using the [member initialized] method after the database connections are set up. Can be emitted using the [member migrate] method when the databse structure needs to be updated (or created).